| Effects of Rare Earth on Behavior of Precipitation and Properties in Microalloyed Steels |
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| 引用本文： | 林勤,陈邦文,唐历,李联生,朱兴元,王怀斌. Effects of Rare Earth on Behavior of Precipitation and Properties in Microalloyed Steels[J]. 中国稀土学报(英文版), 2003, 21(2): 167-171 |
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| 作者姓名： | 林勤 陈邦文 唐历 李联生 朱兴元 王怀斌 |
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| 作者单位： | [1]DepartmentofPhysicalChemistry,UniversityofScienceandTechnologyBeijing,Being100083,China [2]NationalEnterpriseTechnologyCenter,WuhanIronandSteel（Group）Company,Wuhan430080,China [3]PanzhihualronandSteel（Group）Company,Panzhihua617000,China |
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| 基金项目： | ProjectsupportedbytheMinistryofScienceandTechnologyofChina (2 0 0 2BA3 15A 5 ) |
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| 摘 要： | The influence of rare earths on the behavior of precipitation of 14MnNb,X60 and 10Mn V steels was studied by STEM, XRD, ICP and thermal simulation method. The main carbonitride precipitates are Nb(C, N), (Nb, Ti) (C, N) and V(C, N). In austenite RE delays the beginning of precipitation, and decreases the rate of precipitation. In ferrite RE promotes precipitation and increases the amount of equilibrium carbonitride precipitation. RE can make precipitates fine,globular and dispersed in the microalloyed steels. With the increase of the amount of RE in steel, the amount of precipitation increases. The promotion effect is weakened with excessive RE. RE has only little influence on the strength of microalloyed steel, but it can improve impact toughness effectively.
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| 关 键 词： | 微合金钢 析出 稀土 性能 ICP STEM XRD 显微结构 |
Effects of Rare Earth on Behavior of Precipitation and Properties in Microalloyed Steels |
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| Lin Qin ,Chen Bangwen ,Tang Li ,Li Liansheng ,Zhu Xingyuan ,Wang Huaibin. Effects of Rare Earth on Behavior of Precipitation and Properties in Microalloyed Steels[J]. Journal of Rare Earths, 2003, 21(2): 167-171 |
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| Authors: | Lin Qin Chen Bangwen Tang Li Li Liansheng Zhu Xingyuan Wang Huaibin |
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| Affiliation: | Lin Qin 1*,Chen Bangwen 2,Tang Li 3,Li Liansheng 1,Zhu Xingyuan 2,Wang Huaibin 3 |
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| Abstract: | The influence of rare earths on the behavior of precipitation of 14MnNb,X60 and 10MnV steels was studied by STEM, XRD, ICP and thermal simulation method. The main carbonitride precipitates are Nb(C, N),(Nb, Ti)(C, N)and V(C, N). In austenite RE delays the beginning of precipitation, and decreases the rate of precipitation. In ferrite RE promotes precipitation and increases the amount of equilibrium carbonitride precipitation. RE can make precipitates fine, globular and dispersed in the microalloyed steels. With the increase of the amount of RE in steel, the amount of precipitation increases. The promotion effect is weakened with excessive RE. RE has only little influence on the strength of microalloyed steel, but it can improve impact toughness effectively. |
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| Keywords: | metal materials microalloyed steel precipitation properties rare earths |
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