- STEEL SHEET PLATED WITH FE-AL ALLOY HAVING IMPROVED RESISTANCE AGAINST HYDROGEN DELAYED FRACTURE MANUFACTURING METHOD THEREOF AND HOT PRESS FORMED PART MANUFACTURED THEREFROM

摘要

The present invention relates to an Fe-Al alloy plating steel sheet having improved hydrogen delayed fracture properties, a manufacturing method thereof, and a hot rolling press forming member manufactured therefrom. According to an aspect of the present invention, a hot rolling press forming steel sheet comprises: a base steel sheet; and an Fe-Al alloy plating layer formed on a surface of the base steel sheet and including 60 wt% or more of Fe. Moreover, the plating layer can include 90% or more of an Fe-Al alloy phase having a BCC structure on an area basis.