Numerical Analysis of Deformation of AZ31 Magnesium Alloy in Backward Extrusion with Counter Pressure

摘要：

　　A numerical simulation on the deformation behavior of AZ31 magnesium alloy during backward extrusion with counter pressure was investigated by FE software DEFORM.The results show that the steady load increases nonlinearly with the increment of counter pressure.The equivalent strain gradient decreases significantly results from the counter pressure and the unevenness in the top of wall disappeared approximately when the counter pressure is 10~15MPa.Furthermore, there are obviously shear band along the inner fillet to outer fillet of workpiece.Higher hydrostatic pressure generated with counter pressure compared that of no counter pressure leads to improve the plastic deformation limit.The damage factor is reduced significantly in the backward extrusion with counter pressure, which is beneficial to the improvement of crack.

关键词： AZ31 magnesium alloy Backward extrusion Counter pressure

作者: Xueyu Zhang Ruibin Mei Piaopiao Li Li Bao Jie Zhang Youzhi Zhou

作者单位: Northeastern University at Qinhuangdao, Northeastern University, Qinhuangdao, China, 066004

会议类型: 国际会议

会议名称: The 12th Asia-Pacific Conference on Materials Processing(APCMP2016)(第12届亚太材料加工会议)

会议地点: 青岛

会议语种:英文

页码: 216-221

在线出版日期: 2016-06-16（万方平台首次上网日期，不代表论文的发表时间）