| 镁合金塑性变形力学行为与微观组织研究进展 |
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| 引用本文： | 辛仁龙,刘庆.镁合金塑性变形力学行为与微观组织研究进展[J].稀有金属快报,2011(2):16-28. |
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| 作者姓名： | 辛仁龙 刘庆 |
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| 作者单位： | 重庆大学材料科学与工程学院国家镁合金材料工程研究中心; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2007CB613700); 自然科学基金重大国际合作项目(50620130096),自然科学基金重点项目(50231030) |
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| 摘 要： | 介绍了镁合金在单轴压缩、单轴拉伸、轧制和挤压条件下塑性变形的力学行为及微观组织结构演变规律。简述了镁合金中二次拉伸孪生现象以及各种变形条件下孪生与孪生变体类型的选择规律。基于对镁合金位错滑移、机械孪生及动态回复与再结晶行为的认识,对镁合金力学行为的各向异性、轧制与挤压成型能力的影响规律进行了探讨,强调了初始织构对变形机制、动态再结晶及成型能力的重要影响。最后讨论了析出强化镁合金塑性变形与强韧化机理。
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| 关 键 词： | 镁合金 塑性变形 机械孪生 位错滑移 织构 各向异性 |
Research Progress on Plastic Deformation Mechanisms and Microstructure of Mg Alloys |
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| XIN Renlong,LIU Qing.Research Progress on Plastic Deformation Mechanisms and Microstructure of Mg Alloys[J].Rare Metals Letters,2011(2):16-28. |
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| Authors: | XIN Renlong LIU Qing |
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| Affiliation: | XIN Renlong,LIU Qing (National Engineering Research Center for Mg Alloys,College of Materials Science and Engineering,Chongqing University,Chongqing 400030,China) |
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| Abstract: | Mechanical behavior and microstructure evolution of Mg alloys during compression,tension,rolling and extrusion were reviewed.Different types of twinning and twin variants formed in Mg alloys under different deformation conditions,especially double extension twins,were reported.Based on the understandings of dislocation slip,mechanical twinning and dynamic recovery and recrystallization,mechanisms of mechanical property anisotropy,rolling and extrusion workability were discussed.The effect of initial texture... |
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| Keywords: | Mg alloy plastic deformation mechanical twinning dislocation slip texture anisotropy |
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