氢脆
材料科学
氢
冶金
奥氏体
大气(单位)
脆化
奥氏体不锈钢
开裂
变形(气象学)
腐蚀
拉伤
马氏体
复合材料
微观结构
化学
热力学
内科学
有机化学
物理
医学
作者
Xingyang Chen,Linlin Ma,Chengshuang Zhou,Yuanjian Hong,Huimin Tao,Jinyang Zheng
标识
DOI:10.1016/j.corsci.2018.12.015
摘要
The resistance of warm-deformed 304 austenitic stainless steel to hydrogen environment embrittlement (HEE) was investigated by adjusting the deforming temperature and deforming strain in hydrogen atmosphere. Higher deforming temperatures (100∼300 °C) can improve the resistance to HEE, while higher deforming strains weakened the resistance to HEE. Higher deforming temperatures caused a more uniform distribution of the high-density dislocations and less deformation twins, which weakened hydrogen segregation to prevent hydrogen-induced cracking. As the deforming strain increased, more primary deformation twins formed, which promoted the formation of strain-induced α′ martensite and then accelerated the growth of hydrogen-induced cracks.
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