张敏,陈长军,王晓南,章顺虎,侯纪新,杜林秀

• 1:苏州大学机电工程学院激光加工中心
• 2:苏州大学沙钢钢铁学院
• 3:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

开展了一系列热处理(500~750℃保温30 min后空冷)实验,分析了热处理温度对新型纳米析出强化钢组织性能的影响。结果表明:未热处理钢板的屈服强度和抗拉强度分别为510 MPa和620 MPa,显微组织为铁素体+珠光体;热处理温度在500~660℃之间时,屈服强度上升幅度在20~45 MPa之间;而热处理温度在700~750℃之间时,由于形成典型双相钢组织(铁素体+M/A岛),屈服强度仅为350 MPa。热处理温度在500~660℃之间时发生了(Nb,Ti)C的二次析出,且原有的析出物具有很好的热稳定性,宏观上表现为实验钢屈服强度提高。

关键词(KeyWords)： 纳米析出;热处理;析出强化;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51305285);; 江苏省基础研究计划(BK20130315,BK20130304)

作者(Author): 张敏,陈长军,王晓南,章顺虎,侯纪新,杜林秀

DOI: 10.13289/j.issn.1009-6264.2014.s2.019

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