| 微合金元素Ti-Nb对低碳贝氏体钢组织和力学性能的影响 |
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| 引用本文： | 曹慧泉,颜慧成,夏政海,罗登,李广敏,仇圣桃. 微合金元素Ti-Nb对低碳贝氏体钢组织和力学性能的影响[J]. 特殊钢, 2010, 31(1): 52-54 |
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| 作者姓名： | 曹慧泉 颜慧成 夏政海 罗登 李广敏 仇圣桃 |
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| 作者单位： | 1钢铁研究总院国家连铸技术工程研究中心，北京100081 ；2湖南华菱管线股份有限公司，长沙410011；3湖南华菱湘潭钢铁有限公司，湘潭411101 |
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| 摘 要： | 试验的700 MPa级低碳贝氏体钢由30 kg真空感应炉熔炼铸成断面100 mm×50 mm扁锭-轧成12mm板。通过CCT曲线和3～30℃/s冷却速度下组织的分析,研究0.01Ti-0.03Nb和0.06Ti-0.05Nb两种微合金化对(%)0.059～0.066C、1.41～1.67Mn、0.30～0.36Si、0.37～0.48Cu、0.21～0.24Ni、0.18～0.22Mo、0.000 8～0.002 2Bs、0.002 6N低碳贝氏体组织和力学性能的影响。结果表明,0.06Ti-0.05Nb钢的强度高于0.01Ti-0.03Nb钢,但前者Ti含量高,-40℃冲击功较后者低。700 MPa级低碳贝氏体钢合适的微合金化Ti-Nb成分为0.04%～0.05%Nb-0.015%～0.025%Ti。
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| 关 键 词： | 低碳贝氏体钢 Ti-Nb微合金化 组织 力学性能 |
| 收稿时间： | 2009-07-06 |
Effect of Microalloying Elements Ti-Nb on Structure and Mechanical Properties of Low Carbon Bainitic Steel |
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| Cao Huiquan,Yan Huicheng,Xia Zhenghai,Luo Deng,Li Guangmin,Qiu Shengtao. Effect of Microalloying Elements Ti-Nb on Structure and Mechanical Properties of Low Carbon Bainitic Steel[J]. Special Steel, 2010, 31(1): 52-54 |
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| Authors: | Cao Huiquan Yan Huicheng Xia Zhenghai Luo Deng Li Guangmin Qiu Shengtao |
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| Affiliation: | 1 National Engineering Research Center of Continuous Casting Technology, Central Iron and Steel ResearchInstitute, Beijing 100081 ；2 Hunan Valin Steel Tube and Wire Co Ltd, Changsha 410011;3 Xiangtan Steel Co Ltd, Hunan Valin, Xiangtan 411101 |
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| Abstract: | Test 700 MPa low carbon bainitic steel is melted by a 30 kg vacuum induction furnace, cast to 100 mm x 50 mm flat ingot and rolled to 12 mm plate. Based on CCT curves and analysis on structure of steel at cooling rate 3 ~30 Y/s, the effect of two group microalloying： 0. 06Ti-0. 05Nb and 0. 01Ti-0. 03Nb on structure and mechanical properties of low carbon bainitic steel- % : 0. 059 ~0. 066C, 1. 41 ~ 1. 67Mn, 0. 30 ~0. 36Si, 0. 37 ~0. 48Cu, 0. 21 ~0. 24Ni, 0. 18 ~ 0. 22Mo, 0.000 8 ~0. 002 2Bs, 0. 002 6N has been studied. Results show that the strength of steel with 0. 06Ti-0. 05Nb is higher than that of steel with 0. 01Ti-0. 03Nb, but the impact energy at -40 °C of the former, of which the Ti content is higher, is lower than that of the later. The available microalloying Ti-Nb content in 700 MPa low carbon bainitic steel is 0.015% -0. 025%Ti-0. 04% ~0. 05% Nb. |
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| Keywords: | Low Carbon Bainitic Steel Ti-Nb Microalloying Structure Mechanical Properties |
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