预应变亚稳态奥氏体不锈钢（S30408）深冷低周疲劳性能

王一博,丁会明,郑津洋,陆群杰,王振宇,徐平,陈志伟

Cryogenic low-cycle fatigue performance of pre-strained metastable austenitic stainless steel (S30408)

Yi-bo WANG,Hui-ming DING,Jin-yang ZHENG,Qun-jie LU,Zhen-yu WANG,Ping XU,Zhi-wei CHEN

表 4 S30408在不同温度预应变过程中的应力变化

Tab.4 Stress changing of S30408 during pre-strain process at different temperatures

批次 293 K 368 K Rm /MPa R0.35 /MPa R Rm /MPa R0.35 /MPa R W 753 592 0.786 604 555 0.919 X 747 628 0.841 588 555 0.944 Y 802 660 0.823 582 532 0.914 Z 744 624 0.839 558 527 0.944