Martensitic transformation of an austenitic stainless steel under non-proportional cyclic loading

被引：32
作者：
Li, Yajing [1 ]
Yu, Dunji [1 ]
Li, Bingbing [1 ]
Chen, Xu [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 124卷
基金：
中国国家自然科学基金;
关键词：
Martensitic transformation; Non-proportional cyclic loading; Non-proportionality of loading path; Metastable austenitic stainless steels; DEFORMATION-INDUCED MARTENSITE; PHASE-TRANSFORMATION; FATIGUE BEHAVIOR; PLASTIC-DEFORMATION; TEXTURE EVOLUTION; STRAIN; SUBSTRUCTURE; KINETICS; MECHANISMS;
D O I：
10.1016/j.ijfatigue.2019.03.020
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, a series of cyclic tests on a 304L stainless steel with different loading paths were conducted. It revealed that as the non-proportionality of loading path increased, the growth rate of martensitic content became higher and its distribution among the austenitic matrix appeared more uniform. A phase transformation kinetics equation was modified to describe the effect of cumulative plastic strain, loading amplitude and loading path on martensitic transformation. A stress decomposition rule was proposed to incorporate both the non-proportional hardening and martensitic transformation hardening to describe the hardening mechanism.
引用
收藏
页码：338 / 347
页数：10
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