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 2 77 K下S30408母材和预应变材料的拉伸力学性能

Tab.2 Tensile property of S30408 base metal and pre-strain metal at 77 K

试样 Rp0.2 /MPa Rm /MPa ${w_{\alpha '}}$ /% 试验前 试验后 母材 472 1773 0 73.9 293 K预应变 990 1818 16.1 72.2 363 K预应变 723 1829 0 71.4