Fe-Ni-Al-C 系合金冷間圧延材のリューダース型変形挙動に及ぼすγ相安定性の影響

The effect of stability austenite (γ) phase on Lüders-like deformation behavior cold-rolled Fe-Ni-Al-C alloys was investigated by digital image correlation (DIC) analysis, magnetic measurements and electron backscatter diffraction (EBSD) analysis. In this study, Fe-23Ni-5.0Al-0.5C (mass%) alloy (23Ni alloy) Fe-25Ni-5.0Al-0.5C (25Ni were used. tensile strength increased the total elongation decreased with decreasing Ni content. after yielding observed up to a nominal strain approximately 0.04 for 23Ni 1.0 25Ni alloy. transformation from γ martensite (α') specific crystal orientation relationship during deformation, it found that volume fraction α' more easily in than addition, increment higher Lüders-band propagation band propagation. These results suggested change due stability.