| Effects of hot compression deformation temperature on the microstructure and properties of Al-Zr-La alloys |
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| 引用本文： | Xian-hua Yue,Chun-fang Liu,Hui-hua Liu,Su-fen Xiao,Zheng-hua Tang,Tian Tang. Effects of hot compression deformation temperature on the microstructure and properties of Al-Zr-La alloys[J]. 矿物冶金与材料学报, 2018, 25(2): 236-243. DOI: 10.1007/s12613-018-1566-y |
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| 作者姓名： | Xian-hua Yue Chun-fang Liu Hui-hua Liu Su-fen Xiao Zheng-hua Tang Tian Tang |
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| 作者单位： | College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China |
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| 基金项目： | The authors gratefully acknowledge Sichuan Provincial Development and Reform Commission for funding this work by Panxi Strategic Resources Innovation Development Fund(2015);the department of Science and Technology of Sichuan Province |
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| 摘 要： | The main goal of this study is to investigate the microstructure and electrical properties of Al-Zr-La alloys under different hot compression deformation temperatures. In particular, a Gleeble 3500 thermal simulator was used to carry out multi-pass hot compression tests. For five-pass hot compression deformation, the last-pass deformation temperatures were 240, 260, 300, 340, 380, and 420℃, respectively, where the first-pass deformation temperature was 460℃. The experimental results indicated that increasing the hot compression deformation temperature with each pass resulted in improved electrical conductivity of the alloy. Consequently, the flow stress was reduced after deformation of the samples subjected to the same number of passes. In addition, the dislocation density gradually decreased and the grain size increased after hot compression deformation. Furthermore, the dynamic recrystallization behavior was effectively suppressed during the hot compression process because spherical Al3Zr precipitates pinned the dislocation movement effectively and prevented grain boundary sliding.
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| 关 键 词： | microstructure Al-Zr-La alloys hot compression deformation dislocation |
Effects of hot compression deformation temperature on the microstructure and properties of Al–Zr–La alloys |
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| Xian-hua Yue,Chun-fang Liu,Hui-hua Liu,Su-fen Xiao,Zheng-hua Tang,Tian Tang. Effects of hot compression deformation temperature on the microstructure and properties of Al–Zr–La alloys[J]. International Journal of Minerals,Metallurgy and Materials, 2018, 25(2): 236-243. DOI: 10.1007/s12613-018-1566-y |
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| Authors: | Xian-hua Yue Chun-fang Liu Hui-hua Liu Su-fen Xiao Zheng-hua Tang Tian Tang |
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| Affiliation: | 1.College of Materials Science and Engineering,Sichuan University,Chengdu,China;2.TBEA Deyang Cable Stock Co., Ltd.,Deyang,China |
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| Abstract: | The main goal of this study is to investigate the microstructure and electrical properties of Al–Zr–La alloys under different hot compression deformation temperatures. In particular, a Gleeble 3500 thermal simulator was used to carry out multi-pass hot compression tests. For five-pass hot compression deformation, the last-pass deformation temperatures were 240, 260, 300, 340, 380, and 420°C, respec-tively, where the first-pass deformation temperature was 460°C. The experimental results indicated that increasing the hot compression de-formation temperature with each pass resulted in improved electrical conductivity of the alloy. Consequently, the flow stress was reduced af-ter deformation of the samples subjected to the same number of passes. In addition, the dislocation density gradually decreased and the grain size increased after hot compression deformation. Furthermore, the dynamic recrystallization behavior was effectively suppressed during the hot compression process because spherical Al3Zr precipitates pinned the dislocation movement effectively and prevented grain boundary sliding. |
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