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Austenite morphology and resistance to hydrogen embrittlement in medium Mn transformation-induced plasticity steel

Title
Austenite morphology and resistance to hydrogen embrittlement in medium Mn transformation-induced plasticity steel
Authors
Jeong, I.Ryu, K.M.Lee, D.G.Jung, Y.Lee, K.Lee, J.S.Suh, D.-W.
Date Issued
Aug-2019
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
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 equiaxed 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. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URI
http://oasis.postech.ac.kr/handle/2014.oak/100079
ISSN
1359-6462
Article Type
Article
Citation
SCRIPTA MATERIALIA, vol. 169, page. 52 - 56, 2019-08
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 SUH, DONG WOO
Graduate Institute of Ferrous Technology
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