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发明公开
CN108467991A 一种用于超低温的高强韧高锰钢及其热处理工艺 有权

一种用于超低温的高强韧高锰钢及其热处理工艺
摘要：
本发明提供一种用于超低温的高强韧高锰钢，由以下质量百分比的元素组成：C：0.3-0.6%；Si：0.02-0.1%；Mn：20.0-26.0%；Al：0.5-2.5%；Nb：0.05-0.3%；P：≤0.010%；S：≤0.002%；N：0.004-0.010%；O：0.0005-0.002%；余量为Fe。本发明还进一步提供一种用于超低温的高强韧高锰钢的热处理工艺。本发明提供的一种用于超低温的高强韧高锰钢及其热处理工艺，通过冷轧+低温时效+高温再结晶的热处理工艺，制备获得用于超低温的高强韧高锰钢，具有良好的强度和优异的塑性，并且其具有良好的焊接性，成本较低，热处理工艺较为简易。
摘要（英）：

The invention provides a high-toughness high manganese steel used for ultralow temperature. The high-toughness high manganese steel is prepared from, by mass, 0.3-0.6% of carbon, 0.02-0.1% of silicon,20.0-26.0% of manganese, 0.5-2.5% of aluminum, 0.05-0.3% of niobium, less than or equal to 0.010% of phosphorus, less than or equal to 0.002% of sulfur, 0.004-0.010% of nitrogen, 0.0005-0.002% of oxygen and balance ferrum. The invention further provides a thermal treatment technology of the high-toughness high manganese steel used for the ultralow temperature. The high-toughness high manganese steel used for the ultralow temperature and the thermal treatment technology have the advantages that the obtained high-toughness high manganese steel used for the ultralow temperature prepared by usingthe thermal treatment technology comprising cold rolling, low temperature aging and high temperature recrystallization has good strength and excellent plasticity, good weldability, lower cost and simpler thermal treatment technology.

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