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| V和N微合金化对77B钢组织和性能的影响 | |
| 引用本文： | 付博,王勇围,刘建华,刘龙玉,沈金龙,桂美文,马党参.V和N微合金化对77B钢组织和性能的影响[J].热处理,2009,24(6):31-33. |
| 作者姓名： | 付博 王勇围 刘建华 刘龙玉 沈金龙 桂美文 马党参 |
| 作者单位： | 1. 昆明理工大学材料与冶金工程学院,云南,昆明,650093;钢铁研究总院结构材料研究所,北京,100081 2. 钢铁研究总院结构材料研究所,北京,100081 3. 昆明理工大学材料与冶金工程学院,云南,昆明,650093 4. 武钢研究院技术中心,湖北,武汉,430080 |
| 摘 要： | 研究了以钒和氮微合金化的77B钢经1150℃加热、580℃等温处理10min空冷后的组织、力学性能和强化机制。结果表明，加钒能减小77B钢的索氏体片间距，提高抗拉强度，但塑性下降；加钒和氮则可促进V（C，N）的析出，增大索氏体片间距，结果提高了钢的综合力学性能。 |
| 关 键 词： | 微合金化 抗拉强度 相间析出 片层间距 |
Microstructure and Mechanical Property of 77B Steel Microalloyed with Vanadium and Nitrogen |
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| FU Bo,WANG Yong-wei,LIU Jian-hua,LIU Long-yu,SHEN Jin-long,GUI Mei-wen,MA Dang-shen.Microstructure and Mechanical Property of 77B Steel Microalloyed with Vanadium and Nitrogen[J].Heat Treatment,2009,24(6):31-33. | |
| Authors: | FU Bo WANG Yong-wei LIU Jian-hua LIU Long-yu SHEN Jin-long GUI Mei-wen MA Dang-shen |
| Affiliation: | FU Bo, WANG Yong-wei, LIU Jian-hua, LIU Long-yu , SHEN Jin-long, GUI Mei-wen, MA Dang-shen ( 1. Institute of Material and Metallurgy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan ; 2. Institute of Structural Materials, Central Iron and Steel Research Institute, Beijing 100081 ; 3. Wugang Technology Institute, Wuhan 430080, Hubei) |
| Abstract: | The microstructure,mechanical properties and strengthening mechanism of 77B steel microalloyed with vanadium and nitrogen were investigated after being heated at 1 150 ℃, isothermally treated at 580 ℃ for 10 min and subsequently air-cooled. The results reveal that the addition of vanadium to 77B steel will result in the decrease in sorbite lamella interval and the increase in tensile strength, but the decrease in plasticity, and that the addition of both vanadium and nitrogen to 77 B steel will help the V （C, N） precipitate and increase the sorbite lamella interval, thus increasing the overall mechanical property of the steel. |
| Keywords: | microalloying tensile strength interphase precipitation lamella interval |
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