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
张诗昌, 阎立明, 陈 伟, 陈长军
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作者单位：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
中文关键字：镁合金； 超塑性； 空洞分数
英文关键字：magnesium alloy; superplasticity; cavity fraction
中文摘要：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。
英文摘要：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.