抄録
In the process of cold rolling and subsequent annealing of Fe-36wt%Mn, Cu, Cu-0.03wt%P and Cu-1.25wt%Sn-0.08wt%P alloys, the effect of rolling temperature on the recrystallized grain size and mechanical properties was investigated. Cold rolling at 77K suppressed the dynamic recovery during rolling providing high stored energy which gives a driving force for recrystallization. Fe-36wt%Mn and Cu alloys having the grain size of about 1μm were obtained by cold rolling at 77K and subsequent annealing. Additions of alloying elements which decrease the stacking fault energy are effective in the refining of grains. Higher strength without loss of ductility was accomplished by the grain refinement.
