Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion
In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relativ...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Li, Gan [verfasserIn] Li, Xinwei [verfasserIn] Guo, Chuan [verfasserIn] Zhou, Yang [verfasserIn] Tan, Qiyang [verfasserIn] Qu, Wenying [verfasserIn] Li, Xinggang [verfasserIn] Hu, Xiaogang [verfasserIn] Zhang, Ming-Xing [verfasserIn] Zhu, Qiang [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Optics & laser technology - Amsterdam [u.a.] : Elsevier Science, 1971, 147 |
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| Übergeordnetes Werk: |
volume:147 |
| DOI / URN: |
10.1016/j.optlastec.2021.107621 |
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ELV007073577 |
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| 245 | 1 | 0 | |a Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
| 264 | 1 | |c 2021 | |
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| 520 | |a In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. | ||
| 650 | 4 | |a Laser powder bed fusion | |
| 650 | 4 | |a 7075 aluminium alloy | |
| 650 | 4 | |a Volume energy density | |
| 650 | 4 | |a Densification | |
| 650 | 4 | |a Surface roughness | |
| 650 | 4 | |a Loss of alloying elements | |
| 700 | 1 | |a Li, Xinwei |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Chuan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Tan, Qiyang |e verfasserin |4 aut | |
| 700 | 1 | |a Qu, Wenying |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Xinggang |e verfasserin |4 aut | |
| 700 | 1 | |a Hu, Xiaogang |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Ming-Xing |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Qiang |e verfasserin |4 aut | |
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10.1016/j.optlastec.2021.107621 doi (DE-627)ELV007073577 (ELSEVIER)S0030-3992(21)00709-X DE-627 ger DE-627 rda eng 530 620 DE-600 50.37 bkl 53.75 bkl 33.18 bkl 33.38 bkl Li, Gan verfasserin aut Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. Laser powder bed fusion 7075 aluminium alloy Volume energy density Densification Surface roughness Loss of alloying elements Li, Xinwei verfasserin aut Guo, Chuan verfasserin aut Zhou, Yang verfasserin aut Tan, Qiyang verfasserin aut Qu, Wenying verfasserin aut Li, Xinggang verfasserin aut Hu, Xiaogang verfasserin aut Zhang, Ming-Xing verfasserin aut Zhu, Qiang verfasserin aut Enthalten in Optics & laser technology Amsterdam [u.a.] : Elsevier Science, 1971 147 Online-Ressource (DE-627)319950689 (DE-600)2000654-8 (DE-576)255266731 1879-2545 nnns volume:147 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.37 Technische Optik 53.75 Optische Nachrichtentechnik 33.18 Optik 33.38 Quantenoptik nichtlineare Optik AR 147 |
| spelling |
10.1016/j.optlastec.2021.107621 doi (DE-627)ELV007073577 (ELSEVIER)S0030-3992(21)00709-X DE-627 ger DE-627 rda eng 530 620 DE-600 50.37 bkl 53.75 bkl 33.18 bkl 33.38 bkl Li, Gan verfasserin aut Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. Laser powder bed fusion 7075 aluminium alloy Volume energy density Densification Surface roughness Loss of alloying elements Li, Xinwei verfasserin aut Guo, Chuan verfasserin aut Zhou, Yang verfasserin aut Tan, Qiyang verfasserin aut Qu, Wenying verfasserin aut Li, Xinggang verfasserin aut Hu, Xiaogang verfasserin aut Zhang, Ming-Xing verfasserin aut Zhu, Qiang verfasserin aut Enthalten in Optics & laser technology Amsterdam [u.a.] : Elsevier Science, 1971 147 Online-Ressource (DE-627)319950689 (DE-600)2000654-8 (DE-576)255266731 1879-2545 nnns volume:147 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.37 Technische Optik 53.75 Optische Nachrichtentechnik 33.18 Optik 33.38 Quantenoptik nichtlineare Optik AR 147 |
| allfields_unstemmed |
10.1016/j.optlastec.2021.107621 doi (DE-627)ELV007073577 (ELSEVIER)S0030-3992(21)00709-X DE-627 ger DE-627 rda eng 530 620 DE-600 50.37 bkl 53.75 bkl 33.18 bkl 33.38 bkl Li, Gan verfasserin aut Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. Laser powder bed fusion 7075 aluminium alloy Volume energy density Densification Surface roughness Loss of alloying elements Li, Xinwei verfasserin aut Guo, Chuan verfasserin aut Zhou, Yang verfasserin aut Tan, Qiyang verfasserin aut Qu, Wenying verfasserin aut Li, Xinggang verfasserin aut Hu, Xiaogang verfasserin aut Zhang, Ming-Xing verfasserin aut Zhu, Qiang verfasserin aut Enthalten in Optics & laser technology Amsterdam [u.a.] : Elsevier Science, 1971 147 Online-Ressource (DE-627)319950689 (DE-600)2000654-8 (DE-576)255266731 1879-2545 nnns volume:147 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.37 Technische Optik 53.75 Optische Nachrichtentechnik 33.18 Optik 33.38 Quantenoptik nichtlineare Optik AR 147 |
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10.1016/j.optlastec.2021.107621 doi (DE-627)ELV007073577 (ELSEVIER)S0030-3992(21)00709-X DE-627 ger DE-627 rda eng 530 620 DE-600 50.37 bkl 53.75 bkl 33.18 bkl 33.38 bkl Li, Gan verfasserin aut Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. Laser powder bed fusion 7075 aluminium alloy Volume energy density Densification Surface roughness Loss of alloying elements Li, Xinwei verfasserin aut Guo, Chuan verfasserin aut Zhou, Yang verfasserin aut Tan, Qiyang verfasserin aut Qu, Wenying verfasserin aut Li, Xinggang verfasserin aut Hu, Xiaogang verfasserin aut Zhang, Ming-Xing verfasserin aut Zhu, Qiang verfasserin aut Enthalten in Optics & laser technology Amsterdam [u.a.] : Elsevier Science, 1971 147 Online-Ressource (DE-627)319950689 (DE-600)2000654-8 (DE-576)255266731 1879-2545 nnns volume:147 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.37 Technische Optik 53.75 Optische Nachrichtentechnik 33.18 Optik 33.38 Quantenoptik nichtlineare Optik AR 147 |
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10.1016/j.optlastec.2021.107621 doi (DE-627)ELV007073577 (ELSEVIER)S0030-3992(21)00709-X DE-627 ger DE-627 rda eng 530 620 DE-600 50.37 bkl 53.75 bkl 33.18 bkl 33.38 bkl Li, Gan verfasserin aut Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. Laser powder bed fusion 7075 aluminium alloy Volume energy density Densification Surface roughness Loss of alloying elements Li, Xinwei verfasserin aut Guo, Chuan verfasserin aut Zhou, Yang verfasserin aut Tan, Qiyang verfasserin aut Qu, Wenying verfasserin aut Li, Xinggang verfasserin aut Hu, Xiaogang verfasserin aut Zhang, Ming-Xing verfasserin aut Zhu, Qiang verfasserin aut Enthalten in Optics & laser technology Amsterdam [u.a.] : Elsevier Science, 1971 147 Online-Ressource (DE-627)319950689 (DE-600)2000654-8 (DE-576)255266731 1879-2545 nnns volume:147 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.37 Technische Optik 53.75 Optische Nachrichtentechnik 33.18 Optik 33.38 Quantenoptik nichtlineare Optik AR 147 |
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Li, Gan ddc 530 bkl 50.37 bkl 53.75 bkl 33.18 bkl 33.38 misc Laser powder bed fusion misc 7075 aluminium alloy misc Volume energy density misc Densification misc Surface roughness misc Loss of alloying elements Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
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530 620 DE-600 50.37 bkl 53.75 bkl 33.18 bkl 33.38 bkl Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion Laser powder bed fusion 7075 aluminium alloy Volume energy density Densification Surface roughness Loss of alloying elements |
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ddc 530 bkl 50.37 bkl 53.75 bkl 33.18 bkl 33.38 misc Laser powder bed fusion misc 7075 aluminium alloy misc Volume energy density misc Densification misc Surface roughness misc Loss of alloying elements |
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Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
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Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
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Li, Gan Li, Xinwei Guo, Chuan Zhou, Yang Tan, Qiyang Qu, Wenying Li, Xinggang Hu, Xiaogang Zhang, Ming-Xing Zhu, Qiang |
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investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
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Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
| abstract |
In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. |
| abstractGer |
In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. |
| abstract_unstemmed |
In this study, the effects of volume energy density (VED) on densification behaviour, surface morphology and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion at a broad range of processing parameters were investigated. The results showed that the overall relative density of 99.4% was obtained by averting the irregular pores and keyhole pores owing to the optimisation of processing parameters. However, the hot cracks cannot be fully removed, which was mainly attributed to the substantial columnar grains and lack of liquid backfill during the last stage of solidification. Severe balling phenomenon and large gaps between tracks were recognized as the principal causes that may worsen the surface quality. There was a good linear relationship between the VED and the loss in weight contents of low-melting-point elements Zn and Mg, despite the fact that the VED had no influence on the loss of Cu and Cr. The thermodynamic calculation and experiment showed that the weight ratio of Zn to Mg, a critical element ratio in 7075 alloy, varied inversely with VED. |
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Investigation into the effect of energy density on densification, surface roughness and loss of alloying elements of 7075 aluminium alloy processed by laser powder bed fusion |
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|
| score |
7.399493 |