Low-cycle fatigue behavior of gradient structured austenitic stainless steels under high strain amplitude

被引：3
作者：
Ho, Hsin Shen [1 ,2 ]
Lv, Cheng
Zhou, Wenlong
Zhang, Erliang
机构：
[1] Zhengzhou Univ, Sch Mech & Power Engn, Sci Rd 100, Zhengzhou 450001, Peoples R China
[2] Zhengzhou Univ, Henan Key Engn Lab Antifatigue Mfg Technol, Sci Rd 100, Zhengzhou 450001, Peoples R China
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2022年 / 45卷 / 06期
基金：
中国国家自然科学基金;
关键词：
fatigue life; gradient structure; hysteresis energy; low-cycle fatigue; stainless steel; MECHANICAL ATTRITION TREATMENT; NANOSTRUCTURED SURFACE-LAYER; AISI; 316L; MICROSTRUCTURAL EVOLUTION; RESIDUAL-STRESS; SHOT; DEFORMATION; RESISTANCE; CU;
D O I：
10.1111/ffe.13702
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The present work focuses on the investigation of low-cycle fatigue performance of gradient structured (GSed) 316 austenitic steels under high strain amplitude loading conditions. The results show that GSed steels exhibit inherently lower fatigue life than their coarse-grained counterparts. The analyses using energy-based criterion reveals that the fatigue life decrement for GSed steels is attributed to the reduced capability of damage accumulation and the lack of ability to effective damage diffusion. The former is due to the worsened plastic deformation potential and the latter to the degraded surface plastic deformation uniformity.
引用
收藏
页码：1818 / 1829
页数：12
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