On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy
In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 so...
Ausführliche Beschreibung
Autor*in: |
Nik Tankov [verfasserIn] Claire Utton [verfasserIn] Panos Tsakiropoulos [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2024 |
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Schlagwörter: |
refractory metal intermetallic composites refractory complex concentrated alloys |
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Übergeordnetes Werk: |
In: Alloys - MDPI AG, 2023, 3(2024), 1, Seite 59-95 |
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Übergeordnetes Werk: |
volume:3 ; year:2024 ; number:1 ; pages:59-95 |
Links: |
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DOI / URN: |
10.3390/alloys3010005 |
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Katalog-ID: |
DOAJ100885306 |
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520 | |a In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. | ||
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10.3390/alloys3010005 doi (DE-627)DOAJ100885306 (DE-599)DOAJ3e0803a3e2f74ec2b80dcdc0be0c3f7b DE-627 ger DE-627 rakwb eng TA1-2040 TN1-997 TP1-1185 Nik Tankov verfasserin aut On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. alloy design refractory metal intermetallic composites refractory complex concentrated alloys refractory high entropy alloys Nb-silicide-based alloys bcc solid solution Engineering (General). Civil engineering (General) Mining engineering. Metallurgy Chemical technology Claire Utton verfasserin aut Panos Tsakiropoulos verfasserin aut In Alloys MDPI AG, 2023 3(2024), 1, Seite 59-95 (DE-627)1800614659 2674063X nnns volume:3 year:2024 number:1 pages:59-95 https://doi.org/10.3390/alloys3010005 kostenfrei https://doaj.org/article/3e0803a3e2f74ec2b80dcdc0be0c3f7b kostenfrei https://www.mdpi.com/2674-063X/3/1/5 kostenfrei https://doaj.org/toc/2674-063X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2024 1 59-95 |
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10.3390/alloys3010005 doi (DE-627)DOAJ100885306 (DE-599)DOAJ3e0803a3e2f74ec2b80dcdc0be0c3f7b DE-627 ger DE-627 rakwb eng TA1-2040 TN1-997 TP1-1185 Nik Tankov verfasserin aut On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. alloy design refractory metal intermetallic composites refractory complex concentrated alloys refractory high entropy alloys Nb-silicide-based alloys bcc solid solution Engineering (General). Civil engineering (General) Mining engineering. Metallurgy Chemical technology Claire Utton verfasserin aut Panos Tsakiropoulos verfasserin aut In Alloys MDPI AG, 2023 3(2024), 1, Seite 59-95 (DE-627)1800614659 2674063X nnns volume:3 year:2024 number:1 pages:59-95 https://doi.org/10.3390/alloys3010005 kostenfrei https://doaj.org/article/3e0803a3e2f74ec2b80dcdc0be0c3f7b kostenfrei https://www.mdpi.com/2674-063X/3/1/5 kostenfrei https://doaj.org/toc/2674-063X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2024 1 59-95 |
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10.3390/alloys3010005 doi (DE-627)DOAJ100885306 (DE-599)DOAJ3e0803a3e2f74ec2b80dcdc0be0c3f7b DE-627 ger DE-627 rakwb eng TA1-2040 TN1-997 TP1-1185 Nik Tankov verfasserin aut On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. alloy design refractory metal intermetallic composites refractory complex concentrated alloys refractory high entropy alloys Nb-silicide-based alloys bcc solid solution Engineering (General). Civil engineering (General) Mining engineering. Metallurgy Chemical technology Claire Utton verfasserin aut Panos Tsakiropoulos verfasserin aut In Alloys MDPI AG, 2023 3(2024), 1, Seite 59-95 (DE-627)1800614659 2674063X nnns volume:3 year:2024 number:1 pages:59-95 https://doi.org/10.3390/alloys3010005 kostenfrei https://doaj.org/article/3e0803a3e2f74ec2b80dcdc0be0c3f7b kostenfrei https://www.mdpi.com/2674-063X/3/1/5 kostenfrei https://doaj.org/toc/2674-063X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2024 1 59-95 |
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10.3390/alloys3010005 doi (DE-627)DOAJ100885306 (DE-599)DOAJ3e0803a3e2f74ec2b80dcdc0be0c3f7b DE-627 ger DE-627 rakwb eng TA1-2040 TN1-997 TP1-1185 Nik Tankov verfasserin aut On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. alloy design refractory metal intermetallic composites refractory complex concentrated alloys refractory high entropy alloys Nb-silicide-based alloys bcc solid solution Engineering (General). Civil engineering (General) Mining engineering. Metallurgy Chemical technology Claire Utton verfasserin aut Panos Tsakiropoulos verfasserin aut In Alloys MDPI AG, 2023 3(2024), 1, Seite 59-95 (DE-627)1800614659 2674063X nnns volume:3 year:2024 number:1 pages:59-95 https://doi.org/10.3390/alloys3010005 kostenfrei https://doaj.org/article/3e0803a3e2f74ec2b80dcdc0be0c3f7b kostenfrei https://www.mdpi.com/2674-063X/3/1/5 kostenfrei https://doaj.org/toc/2674-063X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2024 1 59-95 |
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10.3390/alloys3010005 doi (DE-627)DOAJ100885306 (DE-599)DOAJ3e0803a3e2f74ec2b80dcdc0be0c3f7b DE-627 ger DE-627 rakwb eng TA1-2040 TN1-997 TP1-1185 Nik Tankov verfasserin aut On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. alloy design refractory metal intermetallic composites refractory complex concentrated alloys refractory high entropy alloys Nb-silicide-based alloys bcc solid solution Engineering (General). Civil engineering (General) Mining engineering. Metallurgy Chemical technology Claire Utton verfasserin aut Panos Tsakiropoulos verfasserin aut In Alloys MDPI AG, 2023 3(2024), 1, Seite 59-95 (DE-627)1800614659 2674063X nnns volume:3 year:2024 number:1 pages:59-95 https://doi.org/10.3390/alloys3010005 kostenfrei https://doaj.org/article/3e0803a3e2f74ec2b80dcdc0be0c3f7b kostenfrei https://www.mdpi.com/2674-063X/3/1/5 kostenfrei https://doaj.org/toc/2674-063X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2024 1 59-95 |
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Nik Tankov |
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Nik Tankov misc TA1-2040 misc TN1-997 misc TP1-1185 misc alloy design misc refractory metal intermetallic composites misc refractory complex concentrated alloys misc refractory high entropy alloys misc Nb-silicide-based alloys misc bcc solid solution misc Engineering (General). Civil engineering (General) misc Mining engineering. Metallurgy misc Chemical technology On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy |
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TA1-2040 TN1-997 TP1-1185 On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy alloy design refractory metal intermetallic composites refractory complex concentrated alloys refractory high entropy alloys Nb-silicide-based alloys bcc solid solution |
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On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy |
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On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy |
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on the microstructure and properties of complex concentrated bcc solid solution and tetragonal d8<sub<m</sub< m<sub<5</sub<si<sub<3</sub< silicide phases in a refractory complex concentrated alloy |
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On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy |
abstract |
In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. |
abstractGer |
In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. |
abstract_unstemmed |
In this work, the refractory complex concentrated alloy (RCCA) 3.5Al–4Cr–6Ge–1Hf–5Mo–36Nb–22Si–1.5Sn–20Ti–1W (at.%) was studied in the as cast and heat treated conditions (100 h or 200 h at 1500 °C). There was strong macrosegregation of Si in the 0.6 kg button/ingot of the cast alloy, in which A2 solid solution, D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, C14-NbCr<sub<2</sub< Laves phase and Ti<sub<ss</sub< and a ternary eutectic of the A2, D8<sub<m</sub< and C14 phases were formed. The partitioning of Ti in the as cast and heat treated microstructure and its relationships with other solutes was shown to be important for the properties of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub<, which were the stable phases at 1500 °C. The near surface microstructure of the alloy was contaminated with oxygen after heat treatment under flowing Ar. For the aforementioned phases, it was shown, for the first time, that there are relationships between solutes, between solutes and the parameters VEC, Δχ and δ, between the said parameters, and between parameters and phase properties. For the contaminated with oxygen solid solution and silicide, trends in relationships between solutes, between solutes and oxygen content and between the aforementioned parameters and oxygen content also were shown for the first time. The nano-hardness and Young’s modulus of the A2 solid solution and the D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< of the as cast and heat-treated alloy were measured using nanoindentation. Changes of nano-hardness and Young’s modulus of the A2 solid solution and D8<sub<m</sub< βNb<sub<5</sub<Si<sub<3</sub< per solute addition for this multiphase RCCA were discussed. The nano-hardness and Young’s modulus of the solid solution and the βNb<sub<5</sub<Si<sub<3</sub<, respectively, were 9.5 ± 0.2 GPa and 177.4 ± 5.5 GPa, and 17.55 ± 0.5 GPa and 250.27 ± 6.3 GPa after 200 h at 1500 °C. The aforementioned relationships and properties of the two phases demonstrated the importance of synergy and entanglement of solutes, parameters and phases in the microstructure and properties of the RCCA. Implications of synergy and entanglement for the design of metallic ultra-high temperature materials were emphasised. |
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On the Microstructure and Properties of Complex Concentrated bcc Solid Solution and Tetragonal D8<sub<m</sub< M<sub<5</sub<Si<sub<3</sub< Silicide Phases in a Refractory Complex Concentrated Alloy |
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https://doi.org/10.3390/alloys3010005 https://doaj.org/article/3e0803a3e2f74ec2b80dcdc0be0c3f7b https://www.mdpi.com/2674-063X/3/1/5 https://doaj.org/toc/2674-063X |
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