| Nb、Ti碳化物的溶解与析出对低C微合金钢组织和性能的影响 |
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| 引用本文： | 李维娟,康小兵. Nb、Ti碳化物的溶解与析出对低C微合金钢组织和性能的影响[J]. 特殊钢, 2006, 27(6): 4-6 |
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| 作者姓名： | 李维娟 康小兵 |
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| 作者单位： | 1鞍山科技大学，鞍山114044;2鞍钢热连轧带钢厂，鞍山114021 |
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| 摘 要： | 采用理论计算方法分析了Nb、Ti碳化物在低C微合金钢(%:0.09C、1.42Mn、0.035Nb、0.012Ti)奥氏体中的溶解与析出,测试了不同加热温度下奥氏体晶粒尺寸以及固溶-时效后实验钢的硬度。结果表明,Nb、Ti碳化物在1060℃全部溶解,800℃时效时,奥氏体中的Nb、Ti基本以NbC、TiC形式析出。700℃时效时,Nb、Ti碳化物在铁素体内析出,随温度降低,碳化物析出减慢。600℃时效,钢的硬度达到最大值。
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| 关 键 词： | Nb-Ti微合金钢 碳化物 溶解 析出 |
| 收稿时间： | 2006-04-26 |
| 修稿时间： | 2006-04-26 |
Effect of Dissolution and Precipitation of Nb-Ti Carbides on Structure and Properties of Low Carbon Microalloying Steel |
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| Li Weijuan,Kang Xiaobing. Effect of Dissolution and Precipitation of Nb-Ti Carbides on Structure and Properties of Low Carbon Microalloying Steel[J]. Special Steel, 2006, 27(6): 4-6 |
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| Authors: | Li Weijuan Kang Xiaobing |
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| Affiliation: | 1 Anshan University of Science and Technology,Anshan 114044;2 Hot Strip Mill,Anshan Iron and Steel,Anshan 114021 |
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| Abstract: | The dissolution and precipitation of Nb-Ti carbides in austenite of a low carbon microalloying steel (0.09C,1.42Mn,0.035Nb,0.012Ti)have been analyzed by theoretical calculation method,and the austenite grain size with different heating temperature and the hardness of steel after solid solution treatment -aging were examined. The results showed that Nb-Ti carbide completely dissolved at 1060 ℃ and almost Nb and Ti in austenite precipitated in the form of NbC and TiC at 800 ℃ aging. At 700 ℃ aging the Nb-Ti carbides precipitated in ferrite,and with decreasing temperature the carbides precipitation decreased. The hardness of steel was up to maximum value as aged at 600 ℃. |
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| Keywords: | Nb-Ti Microalloying Steel Carbide Dissolution Precipitation |
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