变形条件对AZ61镁合金力学行为的影响.pdfVIP

Vol. 15 No.1 第 15 卷第1 期 但份儿税带粮 2008 年2 月 Feb. 2008 JOURNAL OF PLASTICITY ENGINEERING 变形条件对 AZ61 镣合金力学行为的影晌骨 (中北大学材料科学与工程学院，太原 030051) 张 某 张治民 1 摘 要:用热模拟实验机对AZ61 楼合金在变形温度为 150C-400C ，应变速率为0.01s- -10çl 的条件下进行压 缩变形，研究不间变形条件下 AZ61 楼合命的力学响应。结果我明， AZ61 楼含金压缩变形时表现出动态再结晶特 征，随温度上升，再结晶容易发生且应力峰降低p 随变形速率增加，发生再结晶转变的临界应变增大。相比之下， 变形温度对 AZ61 合金力学行为的影响要大于庇变边率的影响。 关键词: AZ61 含金;变形;应力-应变曲线p 组织 中圄分类号: TG146 文献标识码:A 文章编号: 1007币2012 (2008) 01而0076-03 The effect of distortion condition on mechanical behavior of AZ61 magnesium alloy ZHANG Xing ZHANG Zhi-min (School of Materials Science and Engineering , North University of China , Taiyuan 030051 China) Abstr辄t: Thermal compression tests of AZ61 magnesium alloy were performed at deformation temperature 150C -400C and 1 1 strain rates ranged between O. 01s- -10s- , the mechanical responding has been studied under different deformation conditions. 丁he result shows that dynamic recrystallization (DRX) of AZ61 alloy operated under compression. The DRX becomes easier and the values of stress peak decrease when the temperature increase; the critical stain increase with the strain ratio increase. 50 that temperature and straín ratio make a great effect on the mechanical behavior of AZ61 alloy , and temperature is the more important factor. Key wor由: AZ61 alloy; dístortion; stress-strain curve; microstructure 引 1 实验材料及方法