Cyclic behavior and damage mechanism of 304 austenitic stainless steel under different control modes

• DOI: 10.1016/j.jmrt.2024.03.114
• Publication Date: 2024-03-21T00:00:49Z
• Authors: YuanYuan Cui; WenTao Wang; Han Wang; Bin Li; Peng Zhao; FuZhen Xuan
• Keywords: Hardening (computing); Cyclic stress; Low-cycle fatigue; Work hardening; Strain hardening exponent

In this work, low cycle fatigue experiments under both strain and stress control modes with different loading levels were conducted on 304 austenitic stainless steel at ambient temperature to discuss the influence of mode level cyclic response physical mechanism. The results demonstrated that generally exhibited three stages: primary hardening, subsequent softening, secondary hardening finally. degree each softening stage was depended not only but also strain/stress level. Accelerated retarded occurred mode, which made a higher low-cycle life during than for especially relatively high stage, occupying main portion lifetime, proved be associated development martensitic phase extension intersecting stacking faults or micro-twin.