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材料工程  2014, Vol. 0 Issue (4): 58-62    DOI: 10.3969/j.issn.1001-4381.2014.04.010
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
低碳钒微合金钢的淬透性研究
李晓闲1,2, 孙新军2, 杨庚蔚1,2, 李昭东2, 虞澜1, 雍岐龙2
1. 昆明理工大学 材料科学与工程学院, 昆明 650093;
2. 钢铁研究总院 工程用钢所, 北京 100081
Hardenability of Low Carbon Vanadium Microalloyed Steels
LI Xiao-xian1,2, SUN Xin-jun2, YANG Geng-wei1,2, LI Zhao-dong2, YU Lan1, YONG Qi-long2
1. Department of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Department of Structural Steels, Central Iron and Steel Research Institute, Beijing 100081, China
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摘要 利用钢-淬透性的末端淬火实验,结合碳化钒的析出热力学计算,研究V对低碳钢淬透性的影响。结果表明:随着V含量的增加,实验钢的淬透性提高。VC的热力学计算结果表明,在880℃淬火温度下,0.22C钢中固溶V含量随着钢中添加的V含量增加而增加。当钢中添加V含量大于0.137%(质量分数)时,VC将在奥氏体中析出,固溶C含量开始减少。综合考虑固溶C含量、固溶V含量及原始奥氏体晶粒尺寸等因素,对实验钢理想临界直径进行计算,发现理想临界直径的变化趋势与末端淬火实验结果相吻合。
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李晓闲
孙新军
杨庚蔚
李昭东
虞澜
雍岐龙
关键词 淬透性末端淬火实验晶粒细化    
Abstract:By using Jominy end quench test and combining with thermodynamic calculation of vanadium carbide precipitation, the influence of vanadium on the hardenability of low carbon steels was investigated. The results indicate that the hardenability of the experimental steels are improved by increasing the total content of V. The thermodynamic calculation results show that the concentration of V in solution increases with the increasing content of V in 0.22C steel at 880℃. The VC particles precipitate in austenite when the V content is more than 0.137%(mass fraction) in steel, and the concentration of C in solution decreases. The ideal critical diameter of experimental steels is calculated by comprehensive consideration of the concentration of V and C in solution and the prior austenite grain size.The variation trend of ideal critical diameter agrees well with the experimental results.
Key wordsvanadium    hardenability    Jominy end quench test    grain refinement
收稿日期: 2013-01-16      出版日期: 2014-04-20
中图分类号:  TG142.1  
基金资助:国家重点基础研究发展计划资助项目(2010CB630805);中国钢研科技集团有限公司资助项目(事12060840A)
通讯作者: 雍岐龙(1953- ),男,博导,教授,从事专业:金属材料基础理论及强韧化技术研究,联系地址:北京市钢铁研究总院工程用钢所(100081),E-mail:yongql@126.com     E-mail: yongql@126.com
作者简介: 李晓闲(1988- ),女,硕士研究生,从事专业:钒在钢中的作用及其应用,E-mail:xiaoxian0625@163.com
引用本文:   
李晓闲, 孙新军, 杨庚蔚, 李昭东, 虞澜, 雍岐龙. 低碳钒微合金钢的淬透性研究[J]. 材料工程, 2014, 0(4): 58-62.
LI Xiao-xian, SUN Xin-jun, YANG Geng-wei, LI Zhao-dong, YU Lan, YONG Qi-long. Hardenability of Low Carbon Vanadium Microalloyed Steels. Journal of Materials Engineering, 2014, 0(4): 58-62.
链接本文:  
http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2014.04.010      或      http://jme.biam.ac.cn/CN/Y2014/V0/I4/58
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