High-strength steel sheet and manufacturing method therefor
US10041139B2 · kind B2 · utility
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Key dates
| Filing date | Jun 27, 2014 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Jan 30, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/004
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high-strength steel sheet according to the present invention comprises, by weight, 10.0-15.0% Mn, 6.0-9.0% Al, 0.5-2.0% Cr, 0.8-1.6% C, and 0.001-0.01% N, and further comprises, by weight, 0.02-0.1% V, 0.005-0.015% Nb, and 0.005-0.02% Mo, or further comprises 0.1-0.5 wt % TiAl particles. The high-strength steel sheet has a mixed structure comprising austenite and a fine k-carbide having a mean particle diameter of 10-500 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.