Hot stamped component

Patent metadata

Field	Value
Publication number	US-11878488-B2
Application number	US-202017791696-A
Country	US
Kind code	B2
Filing date	Mar 23, 2020
Priority date	Mar 23, 2020
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A hot stamped component, includes: a base material; and a Zn-based plating layer provided in contact with the base material as an upper layer of the base material and containing Zn and Ni. A region of the Zn-based plating layer on a base material side is a Fe—Zn solid solution containing Ni, and two or more twins exist in 10 crystal grains of the Fe—Zn solid solution containing Ni adjacent to an interface between the base material and the Zn-based plating layer.

First claim

The invention claimed is:

1. A hot stamped component, comprising:
a steel base material; and
a plating layer provided in contact with the steel base material as an upper layer of the steel base material and comprising 20% by mass or more Zn and 1.0% by mass or more Ni, each at a center position of a thickness of the plating layer wherein the center position is between the surface of the plating layer and a position in which a content of Fe is 95.0% by mass,
wherein a region of the plating layer on a steel base material side is a Fe—Zn solid solution comprising Ni, and
two or more twins exist in 10 crystal grains of the Fe—Zn solid solution adjacent to an interface between the steel base material and the plating layer.

2. The hot stamped component according to claim 1 , wherein the plating layer has a single-phase structure of the Fe—Zn solid solution.

3. The hot stamped component according to claim 1 , wherein a surface layer side of the plating layer has a single-phase structure of a Zn—Fe—Ni alloy or a two-phase structure of a Zn—Fe—Ni alloy and a Fe—Zn solid solution and the plating layer excluding the surface layer side is a single-phase structure of the Fe—Zn solid solution.

Assignees

• Nippon Steel Corp

Inventors

• Sengoku Akihiro
• Akiba Kojiro
• Kato Satoshi

Classifications

• B32B15/013 Primary

  one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title

• B21D22/022

  by heating the blank or stamping associated with heat treatment (C21D takes precedence) · CPC title

• B21D22/20

  Deep-drawing (special deep-drawing arrangements in, or in connection with, presses B21D24/00) · CPC title

• B32B15/011

  all layers being formed of iron alloys or steels · CPC title

• B32B15/04

  comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)} · CPC title