Austenite morphology and resistance to hydrogen embrittlement in medium Mn transformation-induced plasticity steel. (August 2019)

• Record Type: Journal Article
• Authors: Jeong, Inkyun; Ryu, Kang Mook; Lee, Dae Geon; Jung, Yeonseung; Lee, Kyooyoung; Lee, Jae Sang; Suh, Dong-Woo
• Is Part Of: Scripta materialia. Number 169(2019)
• Page Start: 52
• Page End: 56
• Publication Date: 2019-08
• Subjects: Austenite morphology -- Hydrogen -- Embrittlement -- Transformation-induced plasticity -- Steels; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.05.011
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Influence of austenite morphology on the hydrogen embrittlement in medium Mn transformation-induced plasticity (TRIP) steel was investigated. With nearly the same volume fraction and mechanical stability, the lath-type austenite is found to have more beneficial effect in relieving the hydrogen susceptibility compared to the equi-axed one. Slower hydrogen uptake and diffusion are confirmed in the steel with the austenite of lath-type morphology, which is possibly led by more connections between austenite grains obstructing the migration of hydrogen. Graphical abstract: Unlabelled Image