Effect of Initial Microstructure on Deformation Mechanisms of AZ31 Magnesium Alloy

摘要：

Three kinds of magnesium alloy (AZ31) with different initial microstructure were subjected to tensile deformation. The microstructure before and after tensile deformation were examined. It was found that the deformation mechanisms of the three kinds of magnesium alloy were considerably different. Mg alloy with the coarse grains (about 50μm) along with little dislocation inside deformed by twining and dislocation mechanisms, accompanied with an enormous change of crystal orientation as well as a great increase of hardness. Mg alloy with the fine grains/twins (about 3μm) together with high density of dislocations inside deformed by dislocation mechanisms, accompanied with little change of crystal orientation and hardness. The magnesium alloy with the initial microstructure of fine grains (about 3μm) together with little dislocations inside deformed by dislocation and grain boundary sliding mechanisms, accompanied with little change of crystal orientation, but a large increase of hardness.

关键词： Deformation mechanism Magnesium alloy Initial microstructure

作者: J.P. Mo X.N. Cheng J.M. Ru X.J. Xu

作者单位: Institute of Advanced Forming Technology, Jiangsu University, Zhenjiang 212013, China

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 68-73

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）