(湖南大学 材料科学与工程学院，长沙 410082)
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。
关键字: 镁合金; 织构; 塑性变形; 各向异性; 力学性能
（ School of Materials Science and Engineering, Hunan University,
Changsha 410082, China）
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.
Key words: magnesium alloys; texture; plastic deformation; anisotropy; mechanical properties
