Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys

The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C w...
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Gespeichert in:

Autor*in:	Ma, Rui [verfasserIn] Guo, Xiping [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance

Übergeordnetes Werk:	Enthalten in: Journal of alloys and compounds - Lausanne : Elsevier, 1991, 870
Übergeordnetes Werk:	volume:870

DOI / URN:	10.1016/j.jallcom.2021.159437

Katalog-ID:	ELV005851084

Internformat


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245	1	0	\|a Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys
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520			\|a The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr.
650		4	\|a Multi-elemental Nb-Si based ultrahigh temperature alloy
650		4	\|a Alloying with Mo
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650		4	\|a Mechanical properties
650		4	\|a Oxidation resistance
700	1		\|a Guo, Xiping \|e verfasserin \|4 aut
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publishDate	2021
allfields	10.1016/j.jallcom.2021.159437 doi (DE-627)ELV005851084 (ELSEVIER)S0925-8388(21)00846-X DE-627 ger DE-627 rda eng 670 540 DE-600 51.54 bkl 33.61 bkl 35.90 bkl Ma, Rui verfasserin aut Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr. Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance Guo, Xiping verfasserin aut Enthalten in Journal of alloys and compounds Lausanne : Elsevier, 1991 870 Online-Ressource (DE-627)320504646 (DE-600)2012675-X (DE-576)098615009 nnns volume:870 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 51.54 Nichteisenmetalle und ihre Legierungen 33.61 Festkörperphysik 35.90 Festkörperchemie AR 870
spelling	10.1016/j.jallcom.2021.159437 doi (DE-627)ELV005851084 (ELSEVIER)S0925-8388(21)00846-X DE-627 ger DE-627 rda eng 670 540 DE-600 51.54 bkl 33.61 bkl 35.90 bkl Ma, Rui verfasserin aut Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr. Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance Guo, Xiping verfasserin aut Enthalten in Journal of alloys and compounds Lausanne : Elsevier, 1991 870 Online-Ressource (DE-627)320504646 (DE-600)2012675-X (DE-576)098615009 nnns volume:870 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 51.54 Nichteisenmetalle und ihre Legierungen 33.61 Festkörperphysik 35.90 Festkörperchemie AR 870
allfields_unstemmed	10.1016/j.jallcom.2021.159437 doi (DE-627)ELV005851084 (ELSEVIER)S0925-8388(21)00846-X DE-627 ger DE-627 rda eng 670 540 DE-600 51.54 bkl 33.61 bkl 35.90 bkl Ma, Rui verfasserin aut Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr. Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance Guo, Xiping verfasserin aut Enthalten in Journal of alloys and compounds Lausanne : Elsevier, 1991 870 Online-Ressource (DE-627)320504646 (DE-600)2012675-X (DE-576)098615009 nnns volume:870 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 51.54 Nichteisenmetalle und ihre Legierungen 33.61 Festkörperphysik 35.90 Festkörperchemie AR 870
allfieldsGer	10.1016/j.jallcom.2021.159437 doi (DE-627)ELV005851084 (ELSEVIER)S0925-8388(21)00846-X DE-627 ger DE-627 rda eng 670 540 DE-600 51.54 bkl 33.61 bkl 35.90 bkl Ma, Rui verfasserin aut Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr. Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance Guo, Xiping verfasserin aut Enthalten in Journal of alloys and compounds Lausanne : Elsevier, 1991 870 Online-Ressource (DE-627)320504646 (DE-600)2012675-X (DE-576)098615009 nnns volume:870 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 51.54 Nichteisenmetalle und ihre Legierungen 33.61 Festkörperphysik 35.90 Festkörperchemie AR 870
allfieldsSound	10.1016/j.jallcom.2021.159437 doi (DE-627)ELV005851084 (ELSEVIER)S0925-8388(21)00846-X DE-627 ger DE-627 rda eng 670 540 DE-600 51.54 bkl 33.61 bkl 35.90 bkl Ma, Rui verfasserin aut Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr. Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance Guo, Xiping verfasserin aut Enthalten in Journal of alloys and compounds Lausanne : Elsevier, 1991 870 Online-Ressource (DE-627)320504646 (DE-600)2012675-X (DE-576)098615009 nnns volume:870 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 51.54 Nichteisenmetalle und ihre Legierungen 33.61 Festkörperphysik 35.90 Festkörperchemie AR 870
language	English
source	Enthalten in Journal of alloys and compounds 870 volume:870
sourceStr	Enthalten in Journal of alloys and compounds 870 volume:870
format_phy_str_mv	Article
bklname	Nichteisenmetalle und ihre Legierungen Festkörperphysik Festkörperchemie
institution	findex.gbv.de
topic_facet	Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance
dewey-raw	670
isfreeaccess_bool	false
container_title	Journal of alloys and compounds
authorswithroles_txt_mv	Ma, Rui @@aut@@ Guo, Xiping @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	320504646
dewey-sort	3670
id	ELV005851084
language_de	englisch
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author	Ma, Rui
spellingShingle	Ma, Rui ddc 670 bkl 51.54 bkl 33.61 bkl 35.90 misc Multi-elemental Nb-Si based ultrahigh temperature alloy misc Alloying with Mo misc Alloying with Zr misc Composite alloying with Mo and Zr misc Mechanical properties misc Oxidation resistance Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys
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topic_title	670 540 DE-600 51.54 bkl 33.61 bkl 35.90 bkl Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys Multi-elemental Nb-Si based ultrahigh temperature alloy Alloying with Mo Alloying with Zr Composite alloying with Mo and Zr Mechanical properties Oxidation resistance
topic	ddc 670 bkl 51.54 bkl 33.61 bkl 35.90 misc Multi-elemental Nb-Si based ultrahigh temperature alloy misc Alloying with Mo misc Alloying with Zr misc Composite alloying with Mo and Zr misc Mechanical properties misc Oxidation resistance
topic_unstemmed	ddc 670 bkl 51.54 bkl 33.61 bkl 35.90 misc Multi-elemental Nb-Si based ultrahigh temperature alloy misc Alloying with Mo misc Alloying with Zr misc Composite alloying with Mo and Zr misc Mechanical properties misc Oxidation resistance
topic_browse	ddc 670 bkl 51.54 bkl 33.61 bkl 35.90 misc Multi-elemental Nb-Si based ultrahigh temperature alloy misc Alloying with Mo misc Alloying with Zr misc Composite alloying with Mo and Zr misc Mechanical properties misc Oxidation resistance
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title	Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys
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title_full	Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys
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doi_str_mv	10.1016/j.jallcom.2021.159437
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title_sort	effects of mo and zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental nb-si based ultrahigh temperature alloys
title_auth	Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys
abstract	The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr.
abstractGer	The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr.
abstract_unstemmed	The Nb-Si based alloys adding Mo, Zr and Mo-Zr respectively were prepared by vacuum non-consumable arc melting. The alloys’ microstructure and comprehensive performances including microhardness, room temperature fracture toughness as well as compressive strength and oxidation resistance at 1250 °C were evaluated systematically. The results show that adding Zr in multi-elemental Nb-Si based alloys changes the microstructure from eutectic to hypereutectic, while further adding Mo in Zr-containing alloy decreases the content of primary silicide blocks. Both the single and composite additions of Mo and Zr in the alloys suppress the formation of α(Nb,X)5Si3 whilst promote the formation of γ(Nb,X)5Si3. Both the dissolved Mo (mainly in Nbss) and Zr (primary in γ(Nb,X)5Si3) have the effect of solid solution strengthening and improve the microhardness of phases. The room temperature fracture toughness of the alloys is ameliorated by Zr addition, while is reduced by further Mo addition. Alloying with Mo or Zr alone can enhance, and composite alloying with Mo and Zr continues to increase the compressive strength at 1250 °C of the alloys. The alloy with composite additions of Mo and Zr shows the best oxidation resistance at 1250 °C due to the formation of a denser and well adhesive inner layer of scale and the improvement of the oxidation resistance of silicides under the synergistic effects of Mo and Zr.
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title_short	Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys
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doi_str	10.1016/j.jallcom.2021.159437
up_date	2024-07-06T19:22:57.689Z
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Effects of Mo and Zr composite additions on the microstructure, mechanical properties and oxidation resistance of multi-elemental Nb-Si based ultrahigh temperature alloys

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