Correlational research of microstructure characteristics and hydrogen induced cracking in hot-rolled Fe-6Mn-0.2C-3Al steels

被引：3
|
作者：
Wang, Zheng [1 ]
Li, Zhilin [1 ]
Zhu, Xi [1 ]
Chen, Xi [1 ]
Li, Jinxu [2 ]
Zhou, Yao [2 ]
Xu, Juanping [3 ]
Mi, Zhishan [4 ]
Wan, Zhongmin [1 ]
机构：
[1] Hunan Inst Sci & Technol, Coll Mech Engn, Yueyang 414006, Peoples R China
[2] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Corros & Protect Ctr, Beijing 100083, Peoples R China
[3] Yantai Univ, Coll Nucl Equipment & Nucl Engn, Yantai 264005, Peoples R China
[4] China Iron & Steel Res Inst Grp, Mat Digital R&D Ctr, Beijing 100081, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 228卷
基金：
中国国家自然科学基金;
关键词：
Medium Mn steels; Microstructure characteristics; Hydrogen embrittlement; Hydrogen redistribution; Hydrogen induced delayed cracking; INDUCED PLASTICITY STEEL; MEDIUM MANGANESE STEELS; EMBRITTLEMENT SUSCEPTIBILITY; MECHANICAL-PROPERTIES; AUSTENITE STABILITY; DEFORMATION-BEHAVIOR; PHASE-TRANSFORMATION; RETAINED AUSTENITE; GRAIN-BOUNDARIES; MARTENSITE;
D O I：
10.1016/j.corsci.2023.111811
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two-type specimens with different microstructure e.g. A70 contains finer-grained ferrite and austenite, while abundant coarse ferrite is obtained in A30. The different response on hydrogen embrittlement behavior results from the fundamental differences of microstructure. The dominant role of hydrogen in A30 lies in its local plastic enhancement influence on coarse ferrite, which is the efficient diffusion path for hydrogen, and that in A70 consists in its decohesion effect on ferrite/austenite interfaces, due to the inherited hydrogen of the fresh martensite at interfaces. This work provides a vital insight for microstructural design to improve hydrogen embrittlement resistance for medium Mn steels.
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页数：14
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