Combining multiscale structure and TRIP effect to enhance room temperature tensile properties of 304 stainless steel by cryogenic cyclic plastic strengthening

被引：7
作者：
Wang, Zongchi [1 ]
Shi, Shouwen [1 ,2 ]
Yu, Jingtai [1 ]
Li, Bingbing [1 ]
Li, Yajing [1 ]
Chen, Xu [1 ,2 ,3 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China
[2] Tianjin Key Lab Chem Proc Safety & Equipment Techn, Tianjin 300350, Peoples R China
[3] Zhejiang Inst Tianjin Univ, Ningbo 315201, Zhejiang, Peoples R China
来源：
SCRIPTA MATERIALIA | 2023年 / 234卷
基金：
中国国家自然科学基金;
关键词：
Austenitic stainless steel; Martensitic transformation; Multiscale structure; Strength; Ductility; AUSTENITIC STAINLESS-STEEL; STRAIN-INDUCED MARTENSITE; MECHANICAL-PROPERTIES; TRANSFORMATION; DEFORMATION; MICROSTRUCTURE; DUCTILITY; TWIP;
D O I：
10.1016/j.scriptamat.2023.115581
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, 304 austenitic stainless steel was strengthened by cryogenic cyclic plastic strengthening (CCPS) method to obtain a material that combined multiscale structure and transformation-induced plasticity (TRIP) effect. After strengthening, there were harder small & alpha;& PRIME;-martensite particles limited to the dense slip bands skeleton in the austenite coarse grains, which led to dynamic strain partitioning during uniaxial tension tests at room temperature. In addition, martensitic transformation occurred steadily throughout the strain range of the tensile tests. At room temperature, the characteristics of cryogenic transformation were maintained and the saturation value of the transformation was increased. The strengthened material showed an excellent combi-nation of high strength and ductility at room temperature.
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页数：7
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