| 低碳微合金钢中Nb、V、Ti碳氮化物的回溶研究 |
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| 引用本文： | 张鹏程,武会宾,唐荻,王路兵,崔毅.低碳微合金钢中Nb、V、Ti碳氮化物的回溶研究[J].金属热处理,2007,32(6):41-44. |
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| 作者姓名： | 张鹏程 武会宾 唐荻 王路兵 崔毅 |
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| 作者单位： | 北京科技大学,高效轧制国家工程研究中心,北京,100083 |
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| 摘 要： | 采用透射电镜和X射线光谱技术,研究了低碳微合金钢中Nb、V、Ti的碳氮化物在不同温度保温1 h后的回溶行为.结果表明,低碳微合金钢中存在尺寸明显不同的两类析出,其中颗粒尺寸较大的在80 nm以上;这种颗粒的心部是(Nb,V,Ti)(C,N)相,而颗粒边缘为(Nb,Ti)(C,N)相;颗粒尺寸较小的在20 nm以下,其类型为(Nb,Ti)(C,N).两类析出物中Nb与Ti的原子比均随回溶温度的升高而减小.
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| 关 键 词： | 低碳微合金钢 Nb、V、Ti的碳氮化物 析出 回溶 低碳微合金钢 碳氮化物 回溶 研究 Resolution Microalloyed Steels Carbon 原子比 析出物 类型 边缘 颗粒尺寸 类析 存在 结果 行为 保温 温度 光谱技术 射线 |
| 文章编号： | 0254-6051（2007）06-0041-04 |
| 修稿时间： | 2006-12-05 |
Resolution of Nb, V and Ti Carbonitride Precipitates in Low Carbon Microalloyed Steels |
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| ZHANG Peng-cheng,WU Hui-bin,TANG Di,WANG Lu-bing,GUI Yi.Resolution of Nb, V and Ti Carbonitride Precipitates in Low Carbon Microalloyed Steels[J].Heat Treatment of Metals,2007,32(6):41-44. |
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| Authors: | ZHANG Peng-cheng WU Hui-bin TANG Di WANG Lu-bing GUI Yi |
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| Affiliation: | National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Resolution behavior of Nb,V and Ti carbonitride precipitates in low carbon microalloyed steels during isothermal holding for 1 h at different temperatures was studied by TEM and EDX.The results indicate that two kinds of precipitates with obvious size difference exist in the steels.The bigger precipitates are over 80 nm,the smaller precipitates are under 20 nm.By EDX,it was found that the bigger precipitates are composed of(Nb,V,Ti)(C,N) in core while(Nb,Ti)(C,N) on edge,the smaller precipitates are composed of(Nb,Ti)(C,N).With increasing the holding temperature,the atomic ratio of Nb/Ti in the two kinds of precipitates decreases. |
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| Keywords: | low carbon microalloyed steels Nb V and Ti carbonitride precipitates resolution |
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