AZ61B镁合金热变形动力学的研究  

Study on Hot Deformation Kinetics of AZ61B Magnesium Alloy

作　　者：于翔[1] 丁培道[1] 彭健[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《热加工工艺》2005年第3期14-16,共3页Hot Working Technology

摘　　要：采用等温压缩试验,测定了AZ61B镁合金材料在热变形条件下的流变应力,分析变形条件对流变应力的影响规律,借助于经验公式描述高温变形动力学,计算了合金的热变形激活参数,探明了AZ61B合金试验变形条件下主要的软化机制为动态再结晶。The flow stress values at high temperatures for AZ61B magnesium alloy were obtained by isothermal compression testing. The effective law of deformation parameters on flow stress was studied. The kinetics of high temperature deformation are expressed by means of some emperical rate equations. The activation parameter was calculated. A mechanism of dynamic softening of AZ61B alloy in testing hot deformation was identified to be the dynamic recrystallization.

关 键 词：镁合金 热变形 动力学 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG319[金属学及工艺—金属材料]