| DH36高强度船板钢综合强化机理 |
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| 引用本文： | 吴建中,杨文晟,郭汉杰,于梦曦,石骁,段生朝. DH36高强度船板钢综合强化机理[J]. 有色金属科学与工程, 2017, 8(4): 19-25. DOI: 10.13264/j.cnki.ysjskx.2017.04.004 |
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| 作者姓名： | 吴建中 杨文晟 郭汉杰 于梦曦 石骁 段生朝 |
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| 作者单位： | 北京科技大学冶金与生态工程学院, 北京 100083;高端金属材料特种熔炼与制备北京市重点实验室, 北京 100083 |
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| 基金项目： | 国家自然科学基金资助项目51274031 |
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| 摘 要： | DH36船板钢是我国目前运用较为广泛的高强度船体结构用钢, 利用碳复型、XRD衍射、TEM观察分析等方法, 对控轧控冷后DH36钢中纳米析出物的类型、形貌、尺寸和数目等进行详细的讨论分析, 结果表明:DH36钢中的析出物组织形貌多为规则的方形, 其组成为（Ti, Nb）（C, N）; 试验DH36钢中析出的碳氮化物占基体的体积分数为0.00957 %, 总的析出强化贡献为211.24 MPa; 细晶强化为212.30 MPa; 固溶强化为122.93 MPa; 位错强化为134.43 MPa.
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| 关 键 词： | DH36船板钢 析出强化 固溶强化 细晶强化 位错强化 |
| 收稿时间： | 2016-11-28 |
Comprehensive strengthening mechanism of DH36 high-strength ship plate steel |
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| Affiliation: | School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China |
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| Abstract: | DH36 steel is widely used in China currently as high strength hull structural steel. This paper adopts carbon replica, XRD diffraction, TEM observation and analysis method of controlled rolling and controlled cooling after the DH36 steel nano precipitates of type, morphology, size and number are analyzed in detail. The results show that the morphology of the precipitates in the microstructure of DH36 steel for the rules of the square, which is composed of (Ti, Nb) (C, N). The test of DH36 steel carbonitride precipitation volume fraction of the matrix is 0.00957%. The total contribution to the precipitation strengthening and fine grain strengthening is 211.24 MPa and 212.30 MPa Solid solution strengthening is 122.93 MPa and dislocation is 134.43 MPa. |
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