Hydrogen embrittlement resistance of TWIP (twinning-induced plasticity) steel in high pressure hydrogen environment. (October 2021)

• Record Type: Journal Article
• Authors: Zhou, Chengshuang; Fang, Bei; Wang, Jing; Tang, Dan; Tao, Huimin; He, Yanming; Zhou, Zhengrong; Chen, Changfeng; Zhang, Lin
• Is Part Of: International journal of fatigue. Volume 151(2021)
• Publication Date: 2021-10
• Subjects: Twinning induced plasticity (TWIP) steel -- Fatigue crack growth -- Cold rolling -- Hydrogen Embrittlement; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2021.106362
• Languages: English
• ISSNs: 0142-1123

Abstract

Highlights: New TWIP steel with high resistance to hydrogen embrittlement sensitivity. The effect of twins on TWIP steel fatigue crack growth. The effect of hydrogen on the fatigue properties of TWIP steel. Cold deformation improves fatigue performance of TWIP steel. Abstract: The behavior of as-received and cold-rolled Fe–25Mn–10Ni–0.65C twinning-induced plasticity steel in hydrogen environment was investigated using fatigue crack growth rate tests. The results show that TWIP steel shows weak hydrogen embrittlement susceptibility, which is due to the formation of deformation twins at the crack tip without strain-induced martensite. Hydrogen can promote the formation of deformation twins and may accumulate in the twin beam, which causes fatigue cracks in TWIP steel to propagate along the twin and slip bands in hydrogen environment. Cold rolling can substantially improve the hydrogen embrittlement resistance and fatigue resistance of TWIP steel.