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HIGH STRENGTH NON-MAGNETIC STEEL SHEET HAVING EXCELLENT AUSTENITE STABILITY AND METHOD FOR MANUFACTURING THE SAME
HIGH STRENGTH NON-MAGNETIC STEEL SHEET HAVING EXCELLENT AUSTENITE STABILITY AND METHOD FOR MANUFACTURING THE SAME
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机译：具有出色奥氏体稳定性的高强度非磁性钢板及其制造方法
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摘要
PURPOSE: high-strength nonmagnetic steel plate has good phase stability and its manufacturing method, and providing has high-intensitive and excellent nonmagnetic character while carrying out; So that it is guaranteed that the excellent austenite phase of phase stability. ;CONSTITUTION: there is manufacture high-strength nonmagnetic steel plate good phase stability to execute following steps. Reheat steel ingot comprising C 0.4-0.9wt%, Mn 10-25wt%, Al 1.3-8.0wt%, Si 0.01-2.0wt%, Ti 0.05%~0.2%wt, Si 0.01-2.0wt%, B 0.0005-0.005wt%, S are less than 0.05wt% (in addition to 0), P is less than 0.8wt (removing 0), N number of 0.003-0.01wt%, surplus is Fe and other inevitable impurity, in 1100-1250& deg; C. The steel ingot that hot rolling reheats, and which is executed and completes hot rolling 800-950& deg; C. Spool hot rolled steel plate is at 400-700& deg; C. In cooling and reduced rate has been rolled as 30-60%. Continuously annealing is cooling and has rolled steel disc at 650-900& deg; C. ;The 2013 of copyright KIPO submissions;[Reference numerals] (AA) martensite
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