期刊
SCRIPTA MATERIALIA
卷 172, 期 -, 页码 125-129出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.07.017
关键词
Steel; Precipitation; Strength; Microstructure; Annealing
类别
资金
- POSCO (Pohang Iron & Steel Company), Republic of Korea
Microstructure and tensile properties of Fe-16Mn-0.8C-0.5Si-0.5 V steel subjected to various annealing conditions have been investigated. Our results show that there is a precipitation of fine VC with a small amount of Fe3C during annealing and an increase in annealing time decreases strength due to coarsening of both carbides and grain sizes despite an increase in the volume fraction of VC. Utilization of slow air-cooling instead of water-quenching promotes an additional precipitation of fine VC and Fe3C, resulting in a large increase in strength that are much higher than those of water-quenched specimen as well as conventional high Mn steels. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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