High ductility of Be–Al alloy fabricated by investment casting
Here, we present a high ductility of the Be–Al alloy manufactured by investment casting. It was superior to most Be–Al based alloys reported so far, exhibiting high yield strength of 53∼58 MPa, ultimate tensile strength of 111∼117 MPa, and high tensile strain of 14.1–18.8 %. The many < c + a>...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424000991 |
| _version_ | 1797247910273875968 |
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| author | Yao Xie Yajun Yin Dongxin Wang Junyi Li Xiaoyuan Ji Wen Li Xu Shen Wei Fu Jianxin Zhou |
| author_facet | Yao Xie Yajun Yin Dongxin Wang Junyi Li Xiaoyuan Ji Wen Li Xu Shen Wei Fu Jianxin Zhou |
| author_sort | Yao Xie |
| collection | DOAJ |
| description | Here, we present a high ductility of the Be–Al alloy manufactured by investment casting. It was superior to most Be–Al based alloys reported so far, exhibiting high yield strength of 53∼58 MPa, ultimate tensile strength of 111∼117 MPa, and high tensile strain of 14.1–18.8 %. The many < c + a> dislocations in the Be phase were primarily responsible for the exceptionally high mechanical characteristics. A high Schmid factor for pyramidal slip led to slip transfer between the Be grains and Al grains, which may contribute to relieving stress concentration and delaying early fracture.The profuse activated pyramidal < c + a> dislocations could render the unusual high tensile strain. The high strength was attributed to both the good interfacial strength and the constraint of hard Be phase, which makes the soft Al phase strong like the hard Be phase. It demonstrates the strong texture microstructure design of the Be phase had a synergistic improvement in the strength-ductility balance, suggesting that this could be a useful tactic for enhancing the mechanical characteristics of Be–Al alloys. |
| first_indexed | 2024-03-08T11:53:50Z |
| format | Article |
| id | doaj.art-f32acbc9f06d43128ed07fa70a04d616 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:06:12Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f32acbc9f06d43128ed07fa70a04d6162024-03-24T06:57:15ZengElsevierJournal of Materials Research and Technology2238-78542024-03-0129789802High ductility of Be–Al alloy fabricated by investment castingYao Xie0Yajun Yin1Dongxin Wang2Junyi Li3Xiaoyuan Ji4Wen Li5Xu Shen6Wei Fu7Jianxin Zhou8State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, China; State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd., ShiZuishan 753000, Ningxia, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, China; Corresponding author.State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd., ShiZuishan 753000, Ningxia, China; Corresponding author.State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd., ShiZuishan 753000, Ningxia, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, ChinaState Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China; Corresponding author.State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, ChinaHere, we present a high ductility of the Be–Al alloy manufactured by investment casting. It was superior to most Be–Al based alloys reported so far, exhibiting high yield strength of 53∼58 MPa, ultimate tensile strength of 111∼117 MPa, and high tensile strain of 14.1–18.8 %. The many < c + a> dislocations in the Be phase were primarily responsible for the exceptionally high mechanical characteristics. A high Schmid factor for pyramidal slip led to slip transfer between the Be grains and Al grains, which may contribute to relieving stress concentration and delaying early fracture.The profuse activated pyramidal < c + a> dislocations could render the unusual high tensile strain. The high strength was attributed to both the good interfacial strength and the constraint of hard Be phase, which makes the soft Al phase strong like the hard Be phase. It demonstrates the strong texture microstructure design of the Be phase had a synergistic improvement in the strength-ductility balance, suggesting that this could be a useful tactic for enhancing the mechanical characteristics of Be–Al alloys.http://www.sciencedirect.com/science/article/pii/S2238785424000991Be–Al alloyStrong textureSynergistic improvementPyramidal dislocations |
| spellingShingle | Yao Xie Yajun Yin Dongxin Wang Junyi Li Xiaoyuan Ji Wen Li Xu Shen Wei Fu Jianxin Zhou High ductility of Be–Al alloy fabricated by investment casting Journal of Materials Research and Technology Be–Al alloy Strong texture Synergistic improvement Pyramidal dislocations |
| title | High ductility of Be–Al alloy fabricated by investment casting |
| title_full | High ductility of Be–Al alloy fabricated by investment casting |
| title_fullStr | High ductility of Be–Al alloy fabricated by investment casting |
| title_full_unstemmed | High ductility of Be–Al alloy fabricated by investment casting |
| title_short | High ductility of Be–Al alloy fabricated by investment casting |
| title_sort | high ductility of be al alloy fabricated by investment casting |
| topic | Be–Al alloy Strong texture Synergistic improvement Pyramidal dislocations |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424000991 |
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