|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||L-65: High Pressure Hydrogen Embrittlement of Fe-30Mn-0.2C-(1.5)Al High-Mn Steel
||Seung-Yong Lee, Han-Jin Kim, Jin-Yoo Seo, Jae-Hyeok Shim, Joonho Lee, Byoungchul Hwang
|On-Site Speaker (Planned)
Hydrogen energy society is rapidly coming, and environmental condition of materials for hydrogen system is getting worse. The commercial austenitic alloys used for hydrogen system have high production cost due to high content of expensive Ni. The tendency of hydrogen embrittlement of new austenitic alloys replacing Ni with Mn, C, N elements, therefore, has been actively studied over the last decades. There are austenitic stability, and stacking fault energy of materials as a criterion to estimate the hydrogen embrittlement of austenitic alloys. In this study, the tendency to hydrogen embrittlement of high-Mn steels was compared with other austenitic alloys in terms of stacking fault energy and deformation behavior as well as austenite stability. High-Mn steels with the chemical composition of Fe-30Mn-0.2C-(1.5Al) were pre-charged with hydrogen using high pressure-high temperature hydrogen reactor, followed by tensile testing in air. The microstructure and fracture surfaces were characterized by XRD, SEM, EBSD analysis.
||Planned: Supplemental Proceedings volume