Texture and texture optimization of wrought Mg alloy
Texture and texture optimization of wrought Mg alloy
复制标题
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Dong Jie
中科院分区：
文献类型：
--
作者：
Dong Jie
研究了变形镁合金的织构和织构演变规律.（0001）面位错滑移和拉伸孪晶是变形镁合金的主要变形方式，是变形镁合金挤压和板材中典型的基面织构的主要来源.通过改变变形方式可以改变变形镁合金的织构，而稀土元素的加入是使变形镁合金织构弱化和随机化的另一重要途径，结果表明，随机织构的变形合金具有良好的强度和塑性，特别是良好的拉-压屈服对称性，并探讨了织构随机化或弱化的机理：稀土的加入提高了Mg原子与稀土原子之间的键能，增加了非基面滑移的可能性，但抑制了基面滑移和孪晶，并且纹理被弱化。
The texture and texture evolution of wrought Mg alloy were investigated.The dislocation slip on(0001) plane and the tension twinning are the main deformation modes and resulted in the typical basal textures in Mg extrusion and sheet.The texture can be altered by changing deformation method,and the rare earth addition is another important way to weaken and randomize the texture of wrought Mg alloy,such as Nd,Ce and Y addition.The wrought alloy with random texture displays good strength and ductility,especially good tension-compression yield symmetry.The mechanism for texture randomization or weakening was also addressed.The rare earth(RE) addition may alert the bond energy between Mg atom with RE atom,improve the possibility of non-basal slip,but inhibit the basal slip and the twinning,and the texture is weakened.