期刊
SCRIPTA MATERIALIA
卷 175, 期 -, 页码 49-54出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.09.006
关键词
Liquid metal embrittlement; High strength steel; Zn; Ferrite; Transgranular cracking
类别
资金
- Advanced Steel Processing and Products Research Center at the Colorado School of Mines
Intergranular Zn-assisted liquid metal embrittlement (LME) cracks have been frequently reported in steels, involving austenite grain boundary penetration of liquid Zn at high temperature. In the present study, a Zn-coated high strength steel was deformed at an intercritical temperature, and the characteristics of LME cracking were studied in a mixed microstructure composed of ferrite and austenite. Crack propagation was intergranular in austenite; in contrast, the ferrite exhibited both intergranular LME and transgranular LME. Trace analysis of the crack plane orientation was consistent with cracking along {100} cleavage planes in ferrite. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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