Study on the hydrogen embrittlement behaviour of ultrasonic surface rolling gradient structural materials under alternating stress

被引：0
作者：
Wang, Gang [1 ,2 ]
Wang, Mian [1 ,2 ]
Zhang, Xinjun [1 ]
Tong, Yang [1 ,2 ]
Liang, Lunsu [1 ]
Xu, Guangtao [1 ,2 ]
Zhao, Minghao [1 ,2 ]
Li, Lingxiao [1 ,2 ,3 ]
机构：
[1] Zhengzhou Univ, Sch Mech & Power Engn, Zhengzhou 450001, Henan, Peoples R China
[2] Zhengzhou Univ, Henan Key Engn Lab Antifatigue Mfg Technol, Zhengzhou 450001, Henan, Peoples R China
[3] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Henan, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2025年 / 929卷
基金：
中国国家自然科学基金;
关键词：
Hydrogen embrittlement; Ultrasonic surface rolling; Displacement amplitude; Fatigue; HE-resistant; FATIGUE-CRACK GROWTH; INDUCED AMORPHIZATION; PIPELINE STEELS; STAINLESS-STEEL;
D O I：
10.1016/j.msea.2025.148131
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The in situ hydrogen embrittlement (HE) behaviour and mechanism of ultrasonic surface rolling (USR)-induced surface gradient structured materials under alternating stresses were investigated. The results showed that hydrogen-induced amorphous phenomenon occurs in H-charging fatigue specimens, which leads to hydrogenassisted crack initiation, the increase of displacement amplitude (DA) values and the decrease of fatigue life. The combined effect of surface roughness reduction, grain refinement and residual compressive stress induced by the application of USR treatment to the materials reduced the hydrogen adsorption capacity, hindered hydrogen diffusion, and alleviated hydrogen-induced cracks.
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页数：14
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