画像相関法を用いたAl-Mg合金の変形帯形成過程の解析

抄録

　　　Deformation band formed on the surface during the plastic deformation in Al-Mg alloy was observed by digital image correlation method. As a result, the observed characteristic deformation processes are divided into three types, which correspond to the serrated flow of the A type, the B type and the A+B type, respectively. The deformation process type was shifted to the B type from the A type through the A+B type as the plastic deformation progresses. This phenomenon is considered due to the relationship between the diffusion velocity of solute elements and the moving velocity of dislocations.