镁合金织构与各向异性

来源期刊:中国有色金属学报2005年第1期

论文作者:陈振华 夏伟军 程永奇 傅定发

文章页码:1 - 11

关键词:镁合金; 织构; 塑性变形; 各向异性; 力学性能

Key words:magnesium alloys; texture; plastic deformation; anisotropy; mechanical properties

摘    要:介绍了镁合金变形及退火织构的组分与特点, 论述了在挤压、 轧制、 等径角挤压等塑性变形及退火过程中镁合金织构的演变规律及形成机理,分析了织构与镁合金力学性能的基本关系, 探讨了合金元素、 变形温度、 应变速度、 外加应力及晶粒度等基本因素对镁合金织构特征与各向异性的影响。 结果表明: 织构对镁合金力学性能的影响,其实质是通过改变各滑移系特别是{0001}[1120]基面滑移系的Schmid因子、 产生织构强化或软化而实现的。

Abstract: The characteristics and components of textures in magnesium alloys were presented. The mechanism of the formation and evolution of textures during plastic deformation such as extrusion, rolling, equal channel angle extrusion processes and annealing were reviewed, followed by the analysis of the effects of textures on mechanical properties of magnesium alloys. The influences of main factors such as alloy elements, deformation temperature, strain, strain rate and grain size on texture and anisotropy of magnesium alloys were discussed. The results show that textures affect mechanical properties of magnesium alloys mainly by altering the Schmid factors of all slips, especially basal slip systems and inducing texture strengthening and softening.

相关论文

  • 暂无!

相关知识点

  • 暂无!

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号