High strength galvanized steel sheet and production method therefor
US10329638B2 · kind B2 · utility
1Cited by
1References
10Claims
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Key dates
| Filing date | Jun 10, 2015 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | May 15, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high strength galvanized steel sheet that has a tensile strength (TS) of 780 MPa or higher and excellent bendability, fatigue resistance, and surface appearance quality and a method for producing the high strength galvanized steel sheet. The steel sheet includes, at a position ½ of a thickness of the steel sheet, 5% or more and 80% or less of a ferrite phase in terms of area fraction, 20% or more and 70% or less of a martensite phase in terms of area fraction, and 0% or more and 25% or less of a bainite phase in terms of area fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.