Comprehensive effect of hydrostatic compressive stress in retained austenite on mechanical properties and hydrogen embrittlement of martensitic steels

被引：18

作者：

Chen, Lin ^{[1
,2
]}

Ma, Zhaoxiang ^{[1
,2
]}

Shi, Rongjian ^{[1
,2
]}

Su, Yanjing ^{[1
,2
]}

Qiao, Lijie ^{[1
,2
]}

Wang, Lili ^{[3
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Corros & Protect Ctr, Beijing 100083, Peoples R China

[3] Univ Sci & Technol Beijing, Inst Engn Technol, Beijing 100083, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 41期

基金：

中国国家自然科学基金;

关键词：

Martensitic steels; Retained austenite; Hydrogen embrittlement; Hydrostatic compressive stress; STACKING-FAULT ENERGY; Q-AND-P; INDUCED PLASTICITY STEEL; WROUGHT MAGNESIUM ALLOY; STRAIN-RATE; GRAIN-SIZE; REVERTED AUSTENITE; INDUCED CRACKING; STAINLESS-STEEL; HEAT-TREATMENT;

D O I：

10.1016/j.ijhydene.2020.06.012

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：

This study investigated the effects of hydrostatic compressive stress in retained austenite (RA) on mechanical properties and hydrogen embrittlement (HE) of the martensitic steels. It was found that a high hydrostatic compressive stress in RA, which was produced by the martensitic transformation, lead to an improvement of ductility for the steels without hydrogen. However, the mechanical properties were different after hydrogen charging. The low hydrostatic compressive stress in RA had little effect on HE resistance, but the high hydrostatic compressive stress (231 MPa) induced the twinning of RA and resulted in the aggravation of the HE sensitivity. Moreover, the detwinning of RA via tempering improved the HE resistance. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：22102 / 22112

页数：11

共 74 条

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