文献类型：期刊文献

英文题名：Cyclic Behavior and Damage Mechanism of 304 Austenitic Stainless Steel Under Different Control Modes

作者：Cui, YuanYuan[1,2]; Wang, WenTao[2]; Wang, Han[3]; Li, Bin[2]; Zhao, Peng[2]; Xuan, FuZhen[2]

机构：[1] School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China; [2] Key Laboratory of Pressure Systems and Safety, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [3] Shanghai Marine Equipment Research Institute, Shanghai, 200031, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230443645)

语种：英文

外文关键词：Austenitic stainless steel - Hardening - Low-cycle fatigue - Stress analysis

摘要：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 loading mode and level on the cyclic response and physical mechanism. The results demonstrated that the cyclic response generally exhibited three stages: primary cyclic hardening, subsequent cyclic softening, and the secondary hardening finally. The degree of each hardening and softening stage is depended on not only the loading modes but also the strain/stress level. Accelerated cyclic softening and retarded secondary hardening occurred under the stress mode, which makes a higher low-cycle fatigue life during stress cyclic loading than that for the strain control mode, especially at relatively high strain/stress level. The secondary hardening stage, occupying the main portion of the lifetime, was proved to be associated with the development of martensitic phase and the extension and intersecting of stacking faults or micro-twin. ? 2023, The Authors. All rights reserved.