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US 12,729,422 B2Granted
Hot pressed member and hot press forming steel sheet, and methods of producing same
AssigneeJfe Steel Corporation
InventorsRinta Sato, Yoichi Makimizu, Ryoto Nishiike, Minoru Tanaka
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Abstract
A hot pressed member includes: a steel material; an Al—Fe-based intermetallic compound layer with a thickness of 10 μm to 30 μm disposed on at least one side of the steel material; and Mg-containing oxide particles disposed on the Al—Fe-based intermetallic compound layer, wherein the Mg-containing oxide particles have an average particle size of 5.0 μm or less and a number density of 1000 particles/mm2 or more.
Claims2
A hot pressed member comprising:
- a steel material;
- an Al—Fe-based intermetallic compound layer with a thickness of 10 μm to 30 μm disposed on at least one side of the steel material;
- and
- Mg-containing oxide particles disposed on the Al—Fe-based intermetallic compound layer, wherein
- the Mg-containing oxide particles have an average particle size of 5.0 μm or less and a number density of 1000 particles/mm2 or more, and
- the Al—Fe-based intermetallic compound layer consists of at least one selected from the group consisting of FeAl3, Fe4Al13, Fe2Al5, FeAl, Fe3Al, and Fe2Al5Si.
3 more elements
Dependencies are inferred from the claim text.