TY - JOUR N2 - The present research deals with the effect of pre-strain on the hydrogen embrittlement behavior of intercritically annealed medium-Mn steels. A slow strain-rate tensile test was conducted after hydrogen charging by an electrochemical permeation method. Based on EBSD and XRD analysis results, the microstructure was composed of martensite and retained austenite of which fraction increased with an increase in the intercritical annealing temperature. The tensile test results showed that the steel with a higher fraction of retained austenite had relatively high hydrogen embrittlement resistance because the retained austenite acts as an irreversible hydrogen trap site. As the amount of pre-strain was increased, the hydrogen embrittlement resistance decreased notably due to an increase in the dislocation density and strain-induced martensite transformation. L1 - http://www.journals.pan.pl/Content/125120/PDF-MASTER/AMM-2022-4-38-Hwang.pdf L2 - http://www.journals.pan.pl/Content/125120 PY - 2022 IS - No 4 EP - 1495 DO - 10.24425/amm.2022.141080 KW - medium-manganese steel KW - hydrogen embrittlement KW - electrochemical charging KW - Pre-strain KW - Slow strain-rate tensile (SSRT) test A1 - Kim, Sang-Gyu A1 - Yoon, Young-Chul A1 - Ko, Seok-Woo A1 - Hwang, Byoungchul PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 67 DA - 2022.11.23 T1 - Effect of Pre-strain on Hydrogen Embrittlement in Intercritically Annealed Fe-6.5Mn-0.08C Medium-Mn steels SP - 1491 UR - http://www.journals.pan.pl/dlibra/publication/edition/125120 T2 - Archives of Metallurgy and Materials ER -