Class / Patent application number | Description | Number of patent applications / Date published |
148619000 | Containing 10 percent or more manganese(Mn) (e.g., Hadfield steel, etc.) | 9 |
20100037993 | ULTRAHIGH-STRENGTH TWIP STEEL SHEET AND MANUFACTURING METHOD THEREOF - The present invention provides a TWIP steel sheet that has an austenite matrix structure and includes 15-25 wt % of manganese. The TWIP steel sheet has a recrystallization texture in which brass orientation is suppressed and {3 5 2} <2 2 1> is developed as its main orientation during heat treatment subsequent to cold rolling, and has an average plastic strain ratio of 1.2 or more, preferably 1.5 or more. Since this TWIP steel sheet has high workability and strength, complicated vehicle body components can be easily manufactured through a press molding process without cracking or rupturing. | 02-18-2010 |
148620000 | With working | 8 |
20090120542 | IRON-NICKEL ALLOY STRIP FOR THE MANUFACTURE OF SUPPORT GRIDS FOR THE INTEGRATED CIRCUITS - The invention concerns an iron-nickel alloy strip comprising the following expressed in wt. %: 32≦Co+Ni≦45%, 0≦Co≦6.5%, 0≦Cr=6.5%, Cu≦3%, Si≦0.5%, Mn≦0.75%, the rest being made up of iron and unavoidable impurities resulting from production, whereof the microstructure has a recrystallized volume fraction ranging from 3 to 97%, whereof the thickness is less than 0.5 mm. The invention also concerns the use thereof in the manufacture of support grids for integrated circuits. | 05-14-2009 |
20100012233 | ULTRA HIGH STRENGTH TWIP STEEL SHEET AND MANUFACTURING METHOD THEREOF - Disclosed herein is an ultra high strength TWIP steel sheet having an austenite matrix texture, comprising 0.15˜0.30 wt % of carbon, 0.01˜0.03 wt % of silicon, 15˜25 wt % of manganese, 1.2˜3.0 wt % of aluminum, 0.020 wt % or less of phosphorus, 0.001˜0.002 wt % of sulfur, and residual iron and other inevitable impurities, wherein the TWIP steel sheet is cold-rolled at a reduction ratio of 35˜40% per pass under a condition of 180˜220 Mpa in front and rear tension, and thus has an average plastic strain ratio of 1.2 or more. The ultra high strength TWIP steel sheet has an improved average plastic strain ratio and excellent formability because it has a developed Goss orientation. | 01-21-2010 |
20100258218 | HIGH-STRENGTH TWIP STEEL SHEET AND METHOD OF MANUFACTURING THE SAME - The present invention features a high-strength and light TWIP steel sheet which can be used to manufacture vehicle body parts, and a method of manufacturing the same. | 10-14-2010 |
20140261918 | ENHANCED WEAR RESISTANT STEEL AND METHODS OF MAKING THE SAME - Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous wear resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel having enhanced wear resistance, and methods for fabricating high manganese steel compositions having enhanced wear resistance. The advantageous steel compositions/components of the present disclosure improve one or more of the following properties: wear resistance, ductility, crack resistance, erosion resistance, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and/or environmental cracking resistance. In general, the present disclosure provides high manganese steels tailored to resist wear and/or erosion. | 09-18-2014 |
20150114526 | FE-MN-C-BASED TWIP STEEL HAVING REMARKABLE MECHANICAL PERFORMANCE AT VERY LOW TEMPERATURE, AND PREPARATION METHOD THEREOF - 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. | 04-30-2015 |
20150322551 | HIGH-MANGANESE WEAR RESISTANT STEEL HAVING EXCELLENT WELDABILITY AND METHOD FOR MANUFACTURING SAME - A high-manganese wear-resistant steel having excellent weldability comprises 5 to 15 wt % of Mn, 16≦33.5C+Mn≦30 of C, 0.05 to 1.0 wt % of Si, and a balance of Fe and other inevitable impurities. The microstructure thereof includes martensite as a major component, and 5% to 40% of residual austenite by area fraction. | 11-12-2015 |
20150354037 | HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR - The present invention relates to a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone and a preparation method therefor. One embodiment of the present invention provides: a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone, comprising 0.8-1.5 wt % of C, 15-22 wt % of Mn, 5 wt % or less of Cr (except 0), and the balance of Fe and other inevitable impurities, and further comprising at least one of the following (a) and (b), wherein the microstructure of a welding heat-affected zone comprises 90% or more of austenite by volume fraction; and a preparation method therefor. (a) Mo: 0.1-1% and B: 0.001-0.02% (b) Ti: 0.01-0.3% and N: 0.003-0.1% | 12-10-2015 |
20160153077 | AUSTENITIC LIGHT-WEIGHT HIGH-STRENGTH STEEL WITH EXCELLENT PROPERTIES OF WELDS, AND METHOD OF MANUFACTURING THE SAME | 06-02-2016 |