Fe-Zn phase evolution and cracking behavior in Zn-coated press-hardened steel
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Zinc coated press-hardened steel (PHS) sheet used for the production of strong, corrosion resistant parts is of interest to the automotive community, but concerns about liquid metal embrittlement (LME) remain. Specifically, mitigation of the cracking associated with LME, via better understanding of the alloyed coating microstructural features and interaction with the substrate sheet during deformation, is desired. The objective of this work was to relate the microstructural evolution in the Fe Zn coatings heat treated under single or two step thermal processing to the cracking response in ...