SUS430ステンレス鋼の引張変形特性に及ぼす粒界性格分布の影響

抄録

Effect of grain boundary character distribution (GBCD) on the tensile property in SUS430 ferritic stainless steel was investigated using grain boundary engineered (GBEed) specimen with high fraction of low-energy grain boundaries, especially low-angle GBs in comparison with commercially-available 409L. The control of GB microstructure was carried out by cold rolling of 88 % and subsequent annealing at 973 K for 600 s. The GBEed specimens possessed the texture oriented to {001} – {111} and high fraction of low-angle GBs of more than 30 %. The GBEed specimens showed the higher tensile strength and larger elongation than as-received (non-GBEed) materials.