Effects of hydrogen on the mechanical response of X80 pipeline steel subject to high strain rate tensile tests

• Published in: Fatigue & fracture of engineering materials & structures Vol. 43; no. 4; pp. 684 - 697
• Main Authors: Zheng, Yuanyuan, Zhang, Lin, Shi, Qiaoying, Zhou, Chengshuang, Zheng, Jinyang
• Format: Journal Article
• Language: English
• Published: Oxford Wiley Subscription Services, Inc 01.04.2020
• Subjects: Annealing; Degradation; Diffusion rate; Dislocation mobility; Dislocation pinning; High strain rate; High strength low alloy steels; high‐strain rate tensile test; Hydrogen; Hydrogen charging; Hydrogen embrittlement; hydrogen permeation; iron alloys; Mechanical analysis; Plastic properties; plasticity degradation; Structural steels; Tensile tests

Hydrogen‐induced degradation of X80 pipeline steel was investigated through a high strain rate tensile test (2 × 10−4/s) with interposed unloading, reloading, aging at 30°C, or annealing at 200°C with or without hydrogen charging. The results indicated that plasticity degradation does not occur in t...