繰り返し予負荷を受けるSUS304ステンレス鋼の粘塑性変形特性 (第一報 単軸実験結果)
1989 年 55 巻 512 号 p. 978-984
詳細
1989 年 55 巻 512 号 p. 978-984
Viscoplastic behavior of Type 304 stainless steel after cyclic prestraining and/or axial cyclic prestraining of various strain amplitudes, and of various numbers of cycles was experimentally investigated at room temperature. The difference between flow stress levels depending on strain rate considerably decreases after cyclic loading, which suggests that viscosity of metal is related to low cycle fatigue phenomena. On the other hand. the relaxation stress drop does not decrease. but increases with an increase in the flow stress level due to cyclic work hardening. Work hardening coefficient (plastic modulus) in reloading is strongly concerned to plastic work per cycle in preloading.
