Similarities and differences in the approaches to structural superplasticity and high temperature creep

Structural superplasticity is a high temperature deformation process that leads to large, essentially neck-free elongation (in metals and metallic glasses). It is characterised by the retention of a fine near-equiaxed grain size, predominance of grain boundary sliding, grain rotation and virtual absence of grain elongation. Many models describing superplastic behaviour have been put forth. These models can be classified as those based directly...