Fe—Mn—C-based TWIP steel having remarkable mechanical performance at very low temperature, and preparation method thereof
US10144982B2 · kind B2 · utility
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Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Feb 15, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a Fe—Mn—C-based twinning-induced plasticity (TWIP) steel which includes 13 wt % to 24 wt % of manganese (Mn), 0.4 wt % to 1.2 wt % of carbon (C), and iron (Fe) as well as other unavoidable impurities as a remainder, is manufactured by caliber rolling, has a microstructure including elongated grains that are elongated in a rolling direction, and has an average grain size of the elongated grains in a direction perpendicular to the rolling direction of 1 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.