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| 屈服强度800 MPa的低碳微合金钢 | |
| 引用本文： | 柳得橹,傅杰,康永林,王元立,王艳丽,迪林.屈服强度800 MPa的低碳微合金钢[J].北京科技大学学报,2001,23(4):357-361. |
| 作者姓名： | 柳得橹 傅杰 康永林 王元立 王艳丽 迪林 |
| 作者单位： | 1. 北京科技大学材料物理与化学系 2. 北京科技大学冶金学院 3. 北京科技大学压力加工系 |
| 基金项目： | 国家重点基础研究发展计划(973计划);G19998061500; |
| 摘 要： | 研究了不同成分特征的含锰含碳微合金钢通过控轧控冷后回火的组织与力学性能，Mn含量为1．7％－2．3％的试验钢轧后经快冷和中温回火获得了高强度和一定的塑性、韧性，其中含0．06％，2．3％Mn，0．21％Al和微量Nb,Ti，B的快冷回火钢屈服强度（σ0．2）超过800MPa，延伸率大于4％。室温冲击韧性134－174．5J／cm^2，－40℃冲击韧性为103－110J／cm^2，具有由变形奥氏体转变成的细小贝氏体组织。 |
| 关 键 词： | 低碳微合金钢 变形奥氏体 贝氏体转变 含硼钢 屈服强度 |
| 修稿时间： | 2001年2月12日 |
Microalloying Steels with 800 MPa Yield Strength |
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| LIU Delu,FU Jie,KANG Yonglin,WANG Yuanli,WANG Yanli,DI Lin.Microalloying Steels with 800 MPa Yield Strength[J].Journal of University of Science and Technology Beijing,2001,23(4):357-361. | |
| Authors: | LIU Delu FU Jie KANG Yonglin WANG Yuanli WANG Yanli DI Lin |
| Institution: | LIU Delu,FU Jie,KANG Yonglin,WANG Yuanli,WANG Yanli,DI Lin Department of Material Physics and Chemistry,UST Beijing 100083 Beijing China, Metallurgy School,UST Beijing , Department of Metal Forming,UST Beijing |
| Abstract: | Mecbanical Properties and microstructure of low carbon manganese clean steels microalloyed with Nb, Ti, B were studied. High levels of yield strength (>800 MPa ) have been attained in the tempered steel containing 0.06%C,2.3%Mn, 0.21%Al and small amount of Nb, Ti, V, B. The elongation elongation of this steel is more than 14% and V-notch toughness is 134~174.5 J/Cm2 and 103~110J/cm2 at room temperature and -40 respectively. Very for bainitic structure (with lath width in micrometer or less) was observed in the steel. Effects of deformation as well as Al additive on the austenite-bainite transformation and mechanical properties have been investigated. |
| Keywords: | clean micro-alloying steel bainitic transformation microstructure and mechanical properties boron containing steel Al additive |
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