Strain-Controlled Fatigue Behavior and Microevolution of 316L Stainless Steel under Cyclic Shear Path

被引：7
|
作者：
Liu, Xinna [1 ]
Zhang, Shuai [2 ]
Bao, Yanmei [2 ]
Zhang, Zhongran [3 ]
Yue, Zhenming [2 ]
机构：
[1] Harbin Univ Sci & Technol, Rongcheng Campus, Rongcheng 264300, Peoples R China
[2] Shandong Univ Weihai, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China
[3] Shandong Jiaotong Univ, Naval Architecture & Port Engn Coll, Weihai 264310, Peoples R China
来源：
MATERIALS | 2022年 / 15卷 / 15期
基金：
中国国家自然科学基金;
关键词：
cyclic shear; strain amplitude; cyclic response; martensitic transformation; INDUCED MARTENSITIC-TRANSFORMATION; MECHANICAL-PROPERTIES; AISI; 316L; DEFORMATION; LIFE; EVOLUTION; FRACTURE; LCF;
D O I：
10.3390/ma15155362
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Based on the twin bridge shear specimen, the cyclic shear experiments were performed on 1.2 mm thin plates of 316L metastable austenitic stainless steel with different strain amplitudes from 1 to 5% at ambient temperature. The fatigue behavior of 316L stainless steel under the cyclic shear path was studied, and the microscopic evolution of the material was analyzed. The results show that the cyclic stress response of 316L stainless steel exhibited cyclic hardening, saturation and cyclic softening, and the fatigue life is negatively correlated with the strain amplitude. The microstructure was analyzed by using electron back-scattered diffraction (EBSD). It was found that grain refinement and martensitic transformation during the deformation process led to rapid crack expansion and reduced the fatigue life of 316L.
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页数：12
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