一、引言金属超塑性成形是七十年代开始进入实用阶段的新工艺,其应用范围日益扩大。很多实际问题如变形体的应力分布,尺寸变化,总变形力计算等都需要进一步从理论上给予解决,然而由于缺乏系统的实验数据,在分析这些问 I. INTRODUCTION Metal superplastic forming is a new technology that has entered the practical stage in the seventies. Its application scope is expanding day by day. Many practical problems such as deformation of the stress distribution, dimensional changes, the total deformation force calculation and so on need to be further theoretically solved, however, due to the lack of systematic experimental data in the analysis of these questions