Improvement of Resistance to Hydrogen Embrittlement for 1300MPa Ultra-high Strength Steel by Introducing Nano-sized Cu-rich Phase Precipitation

被引：2
|
作者：
Li, Chengning [1 ,2 ]
Gao, Heshan [1 ,2 ]
Jiang, Yuanbo [1 ,2 ]
Fu, Wen [1 ,2 ]
Yan, Qiangjun [1 ,3 ]
Hu, Wenyi [4 ]
Wang, Dongpo [1 ,2 ]
Di, Xinjie [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China
[2] Tianjin Key Lab Adv Joining Technol, Tianjin 300350, Peoples R China
[3] Nanjing Iron & Steel Co Ltd, Nanjing 210035, Jiangsu, Peoples R China
[4] Longyan Univ, Coll Chem & Mat Sci, Longyan 364012, Fujian, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2022年 / 17卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Hydrogen embrittlement; Ultra-high strength steel; Cu-rich precipitation; Thermal desorption spectrometry; MECHANICAL-PROPERTIES;
D O I：
10.20964/2022.06.49
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Cu-bearing and conventional martensite ultra-high strength steels with tensile strengths of 1300 MPa were investigated to explore the effect of the precipitation of Cu-rich particles on hydrogen embrittlement (HE). The results showed that the Cu-bearing steel strengthened by 9R Cu-rich precipitates had nanoscale and coherent properties and exhibited a higher resistance to HE than the conventional martensite steel. The Cu-rich precipitates served as irreversible hydrogen traps, leading to a low diffusible hydrogen content and hydrogen diffusivity for the Cu-bearing steel, thereby providing an effective approach to improve the hydrogen embrittlement of ultra-high strength steels.
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页数：14
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