摘要
Ⅰ. INTRODUCTION A series of problems raised in the application of technology of superplastic extrusion formation are in need of giving general answers and guiding principles with theory of mechanics, a typical one, for instance, is the effect on extrusion with regard to conditional parameters. According to 'The theoretical analysis of superplastic extrusion through ta-
基金
proiect supported by the Natural Science Foundation of China
