镁合金超塑性拉伸空洞分数的计算方法  

Calculation Method of Cavity Fraction of Magnesium Alloy in Tensile Test

作　　者：张诗昌[1] 阎立明[1] 陈伟[1] 陈长军[1] 

机构地区：[1]武汉科技大学钢铁冶金与资源利用教育部重点实验室,湖北武汉430081

出　　处：《热加工工艺》2010年第20期23-24,28,共3页Hot Working Technology

基　　金：湖北省教育厅重点项目(Z200511007)

摘　　要：提出了一种通过测量拉伸应力变化计算超塑性空洞分数的方法,并推导出空洞分数的计算公式。对AZ31镁合金空洞分数的计算结果表明:温度、应变量和应变速率是影响材料超塑性拉伸空洞分数的主要因素。A method was proposed and an equation was deduced for calculating cavity fractions of materials by simply measuring stress during super-plastic deformation.The calculated results of cavity fraction of AZ31 alloy during super-plastic tensile test show that the temperature,strain and strain rate are the main factors to effect cavities fraction.

关 键 词：镁合金 超塑性 空洞分数 

分 类 号：TF146.22[冶金工程—冶金物理化学] TG113.2[金属学及工艺—物理冶金]