一种新型700 MPa级低碳高强度钢的研制

机械工程材料, 2006, 30(11): 43-55. doi: 10.3969/j.issn.1000-3738.2006.11.014

一种新型700 MPa级低碳高强度钢的研制

衣海龙 ^1, , 杜林秀 ^2, , 李晓强 ^3, , 王国栋 ^4, , 刘相华 ^5,

1.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

2.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

3.空军航空大学军事仿真技术研究所,吉林,长春,130022

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

5.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: 国家高技术研究发展计划(863计划)(2003AA33G010) 国家自然科学基金(50271015)

关键词：控制轧制 , 控制冷却 , 低碳高强度钢

A New 700 MPa Low Carbon High Strength Steel

通过控制轧制与控制冷却,研制出下屈服强度为700MPa级的低碳高强度钢,并对其组织及强化机制进行了分析.结果表明:该高强度钢的组织为铁素体,其强化相为细晶铁素体及在铁素体基体上分布的细小析出相,且析出强化量为250 MPa,这是过去热轧微合金钢板的2～4倍.铁素体基体中较高的位错密度和分布细小的析出物改善了钢材的塑性,使材料具有良好的伸长率.

参考文献

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材料期刊网

一种新型700 MPa级低碳高强度钢的研制

A New 700 MPa Low Carbon High Strength Steel

参考文献