Microstructure of liquid metal embrittlement cracks on Zn-coated 22MnB5 press-hardened steel
SCIE
SCOPUS
- Title
- Microstructure of liquid metal embrittlement cracks on Zn-coated 22MnB5 press-hardened steel
- Authors
- Cho, L; Kang, H; Lee, C; De Cooman, BC
- Date Issued
- 2014-11
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Zn-coated press-hardened steel, used for ultrahigh-strength structural parts of passenger cars, is sensitive to liquid-metal-induced embrittlement cracking during die quenching. The microstructure of the intergranular liquid-metal-induced cracks was analyzed in detail. A new model for crack formation is proposed. Intergranular cracking is due to the grain boundary penetration of a liquid Zn alloy phase along a crack tip propagating on prior austenite grain boundaries weakened by the Zn diffusion-mitigated phase transformation to ferrite. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14339
- DOI
- 10.1016/J.SCRIPTAMAT.2014.07.008
- ISSN
- 1359-6462
- Article Type
- Article
- Citation
- SCRIPTA MATERIALIA, vol. 90-91, page. 25 - 28, 2014-11
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.