一方向凝固インゴットから圧延した 18-8 ステンレス鋼板の集合組織と異方性

概要

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18-8 stainless steel ingots solidified unidirectionally were cold-rolled in the longitudinal, transverse and perpendicular directions of columnar crystals. During cold-rolling to 95% reduction in thickness, all the specimens transform from γ phase to α phase. This strain-induced transformation proceeds most slowly in the specimen cold-rolled in the direction parallel to the growth direction of columnar crystals. The cold-rolling textures of α phase consist mainly of {211}<011> and {100}<011> orientations. {211}<011> orientation is the major component of the specimen rolled in the direction parallel to the growth direction of columnar crystals, whereas it is {100}<011> orientation for the other specimens. The maximum value of Young's modulus is obtained by cold-rolling and subsequent tempering at 550℃. Lowering of saturation magnetization, rise of coercive force, and increase in the magnetic anisotropy by tempering at around 600℃ are supposed to be correlated with the shape anisotropy of ferromagnetic α phase in non-magnetic γ phase, formed by reverse transformation.
社団法人日本鉄鋼協会の論文
1972-05-01