Effect of pre-strain on critical conditions for hydrogen-induced delayed cracking and crack nucleation characteristic of DP1180 steel

被引：8
作者：
Li, Weiguo [1 ]
Wang, Fei [2 ]
Wu, Weijie [1 ]
Zhou, Qingjun [2 ]
Li, Jinxu [1 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Corros & Protect Ctr, Beijing 100083, Peoples R China
[2] Baoshan Iron & Steel Co Ltd, Res Inst, Shanghai 201900, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 227卷
关键词：
DP1180; Hydrogen-induced delayed cracking; Dislocation slip transfer; Hydrogen distribution; Pre-strain; HIGH-STRENGTH STEELS; ENHANCED LOCALIZED PLASTICITY; Q-AND-P; EMBRITTLEMENT SUSCEPTIBILITY; RETAINED AUSTENITE; CONSTANT-LOAD; FRACTURE; DEFORMATION; MICROSTRUCTURE; DISLOCATION;
D O I：
10.1016/j.corsci.2023.111749
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hydrogen-induced delayed cracking represents a significant threat to the dependable performance of advanced high-strength steel. This study employed constant load tensile tests to uncover critical conditions for hydrogeninduced delayed cracking of DP1180 steel plate, establishing a precise relationship between pre-strain, threshold stress, and critical hydrogen concentration. Furthermore, this research explored dislocation slip transfer at grain boundaries, utilizing geometric compatibility factor (m') and residual Burgers vector (br), and analyzed slip characteristics at martensite/martensite, ferrite/ferrite, and martensite/ferrite interfaces. These findings provide valuable references for the safety assessment of DP1180 in hydrogen-exposed environments.
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收藏
页数：19
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