The superplastic constitutive relation developed by the second author of the paper considers three types of microscopic deformation mechanisms and the grain growth process.

• 金泉林等提出的超塑性本构关系考虑了三种微观变形机制和晶粒生长过程,但单纯依靠实验很难准确的测定该本构关系的材料参数。