硅-锰系TRIP钢热处理工艺的研究

1.沈阳航空工业学院材料工程系,辽宁沈阳,110034

2.辽宁省教育厅,辽宁沈阳,110032

3.东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳,110004

4.东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳,110004

基金项目: 国家自然科学基金(50334010)

Heat Treatment Process of Si-Mn TRIP Steel

硅-锰系TRIP钢仅含碳、硅、锰等合金元素,采用亚温等温淬火及完全淬火加亚温等温淬火热处理,获得铁素体、贝氏体和残余奥氏体三相组织,残余奥氏体分别呈块状和针状.该钢在Ms～Md温度之间拉伸试验表明其力学性能提高显著.完全淬火加亚温等温淬火试样在50℃拉伸时,伸长率最高值达41.5%.

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