Study of the Microstructure of AZ31B Magnesium Alloy Under High Strain Rate Deformation
In order to investigate the microstructure evolution under high strain rate deformation of magnesium alloy, AZ31B magnesium alloy was impacted by Split Hopkinson Pressure Bar within the strain rates of 496s-1 to 2120s-1, then the specimens were observed by optical microscopy. The results show that when the strain rate are relatively low (496s-1-964s-1), the microstructure is predominated by high density of twinning, while increase the strain rate to 2120s-1 the volume fraction of twins is decreased. This implies that at relatively lower strain rate the deformation mechanism of AZ31B magnesium alloy under impact loading is twinning; increasing the strain rate the prismatic slip and pyramidal slip may be active besides twinning.
AZ31B magnesium alloy high strain rate deformation microstructure
Mao Pingli Liu Zheng Wang Changyi Wang Zhi
School of Materials Science and Engineering, Shenyang University of Technology,Shenyang 110870, Chin School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Chi
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
325-331
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）