Method For Producing High Strength Steel Strips or Sheets With Twip Properties, Method For Producing a Component and High-Strength Steel Strip or Sheet
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Nov 3, 2004
filing date -
Nov 3, 2004
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Abandoned
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Abstract
A method for producing cold-formable, high-strength steel strips or sheets with TWIP properties, wherein in successive working steps are carried out without interruption, uses a molten material of the following composition(mass %): C: 0.003-1.50%, Mn: 18.00-30.00%, Ni: ≦10.00%, Si: ≦8.00%, Al: ≦10.00%, Cr: ≦10.00%, N: ≦0.60%, Cu: ≦3.00%, P: ≦0.40%, S: ≦0.15%, selectively one or more components from the Se, Te, V, Ti, Nb, B, REM, Mo, W, Co, Ca and Mg group provided that the total content of Se, Te is ≦0.25%, the total content of V, Ti, Nb, B, REM is ≦4.00%, the total content of Mo, W, Co is ≦1.50% and the total content of Ca, Mg is ≦0.50%, the rest being iron and melting conditioned impurities, wherein the content of Sn, Sb, Zr, Ta and As, whose total content is equal to or less than 0.30% is included in said impurities.
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