熱處理に伴ふ殘留應力の研究(第3報) Fe-Ni合金の各種熱處理に伴ふ試料の變形について

The residual stress restored in the specimens after variously heat-treated was reported in previous papers. The changes in dimensions and shapes of the same specimens are explained in the present paper. The specimens are Fe-Ni alloys with various Ni contents. The results obtained are as follows: In the course of the quick cooling, the prismatic specimen bends by the cooling stress before Ar'', and the shape of the specimen thus changed remains almost unaltered when it undergoes Ar'' transformation, while the cooling stress before Ar'' is released by the Ar''.