1967 年 31 巻 11 号 p. 1300-1305
Fe-25.7 wt%Ni and Fe-19.9 wt%Ni alloys were rolled 90% at 400°C after austenitizing at 700°C. The textures of the martensite phase developed on cooling after the rolling were determined by the X-ray pole figure method and compared to that of Fe-30.2 wt%Ni alloy reported previously. It has been considered that the variation of the texture of martensite with Ni content is mainly due to the change in the selection of crystallographically equivalent variants of the orientation relationship in the martensitic transformation. The (200) poles of the preferred orientations of martensite derived from those of austenite by the orientation relationships which can be related to the slip systems of austenite exerted by the large shear stresses during rolling coincide with the pole density maxima in the (200) pole figures of martensite in these alloys.