High-strength hot-pressed part and method for manufacturing the same
US10392677B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Oct 5, 2015 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Aug 19, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high-strength hot-pressed part having a specified chemical composition, a microstructure including, in terms of volume fraction, 80% or more of a martensite phase, in a range of 3.0% to 20.0% of a retained austenite phase, a tensile strength TS of 1500 MPa or more, and a uniform elongation uEl of 6.0% or more. A method for manufacturing the high-strength hot-pressed part, the method comprising performing a heating process and a hot press forming process on a raw material steel sheet in order to obtain a hot-pressed part having a specified shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.