It is pointed out that there are faults and untruth about the discussion of shift process in present reference books and college teaching materials.

The results show that the influence of partition on the shift of unloading zone is a short range effect,proper partition could effectively keep the shift in an acceptable range and reduce the whole forming load,the partition has little effect on the whole deformation uniformity and forming quality.

The creep rate resulting from dislocation climb induced by vacancy supereaturation during the anodic polarization has been calculated.

The experimental results show that strain rate doesn't affect the fracture mechanism of intragranular dimple and mainly dislocation slipping;the tensile strength is increased slightly along with the increase of strain rate,however,the elongation doesn't decrease in general which is decreased firstly and raised later with the increase of strain rate,the high s.

Through the analyses of the X-ray diffraction data and the corresponding crystallography, it was found that during the first pass of ECAP, the main deformation mode of α phase is {1011}(1012} twinning, while during the following passes the main deformation mode is dislocation slip.

Twinning and dislocation slip have been proven to be the dominant model of plastic deformation when the temperature is bel.

In the process of superplastic deformation, the dislocation sliding has important cordinating effect, so that the grain boundary sliding proceeds easily.

It is of no significance that gold is transported from the inside of pyrite in which gold atoms diffuse via defects such as dislocations if there is no dislocation sliding in the pyrite.