| 等径角挤压对AZ80M合金在半固态等温加热过程中液相分布的影响 |
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| 引用本文： | 范玲玲,周明扬,郭阳阳,张钰雯茜,权高峰.等径角挤压对AZ80M合金在半固态等温加热过程中液相分布的影响[J].中国有色金属学会会刊,2021,31(6):1599-1611. |
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| 作者姓名： | 范玲玲 周明扬 郭阳阳 张钰雯茜 权高峰 |
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| 摘 要： | 将经过等径角挤压(ECAP)和未经ECAP的AZ80-0.2Y-0.15Ca(质量分数,％)(AZ80M)合金试样进行半固态等温加热处理,得到两种半固态坯料.对两种坯料的在半固态等温加热处理前后的显微组织进行比较和分析.研究结果表明,在半固态等温加热处理中,经过3道次ECAP(3P)后的试样与初始挤压态试样的液相分布明...
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| 关 键 词： | AZ80M 等径角挤压 半固态显微组织 液相分布 粗化机制 |
| 收稿时间： | 27 June 2020 |
Effect of ECAP process on liquid distribution of AZ80M alloy during semi-solid isothermal heat treatment |
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| Ling-ling FAN,Ming-yang ZHOU,Yang-yang GUO,Yu-wen-xi ZHANG,Gao-feng QUAN.Effect of ECAP process on liquid distribution of AZ80M alloy during semi-solid isothermal heat treatment[J].Transactions of Nonferrous Metals Society of China,2021,31(6):1599-1611. |
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| Authors: | Ling-ling FAN Ming-yang ZHOU Yang-yang GUO Yu-wen-xi ZHANG Gao-feng QUAN |
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| Affiliation: | 1. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China |
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| Abstract: | Two kinds of semi-solid samples of AZ80?0.2Y?0.15Ca (wt.%) (AZ80M) magnesium alloy were prepared by semi-solid isothermal heat treatment of materials with and without equal channel angular pressing (ECAP) process. The microstructures of initial and semi-solid treated samples were compared and analyzed. The results showed a significant difference in the liquid phase distribution between three-pass ECAP processed (3P) and as-received samples during the isothermal heating process. The semi-solid 3P sample showed a more uniform liquid distribution due to its smaller dihedral angle. Besides, the coarsening processes of solid grains of as-received and 3P samples were dominated by the coalescence and Ostwald ripening mechanism, respectively. The difference of coarsening processes was mainly related to the proportion of the high-angle grain boundaries in materials, which further affected the evolution behavior of the liquid pools. |
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| Keywords: | AZ80M equal channel angular pressing semi-solid microstructure liquid phase distribution coarsening mechanism |
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