赵英利,时捷,曹文全,惠卫军,谢刚

• 1:昆明理工大学材料与冶金工程学院
• 2:钢铁研究总院结构材料研究所

摘要(Abstract)：

利用微合金析出物与临界晶粒尺寸的定量关系,研究了Si含量较高的中碳Nb微合金钢在不同加热温度下的奥氏体晶粒长大规律。结果表明,随着加热温度的升高,试验钢中奥氏体晶粒逐渐长大,当温度高于1100℃时,晶粒开始粗化。由经验模型可得,随着温度的升高,析出相的体积分数逐渐减少,而颗粒半径逐渐增大,由于二者的共同作用导致了奥氏体晶粒在高于1100℃时迅速粗化;在实验的基础上,得到了适用于试验钢的晶粒长大模型。

关键词(KeyWords)： 微合金钢;晶粒长大;析出

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 赵英利,时捷,曹文全,惠卫军,谢刚

DOI: 10.13289/j.issn.1009-6264.2010.04.014

参考文献(References)：

• [1]张志波,孙新军,刘清友,等.均热过程中低碳钢奥氏体晶粒长大规律研究[J].材料热处理学报,2008,29(5):89-92.ZHANG Zhi-bo,SUN Xin-jun,LIU Qing-you,et al.Study on austenite grain growth of a low carbon steel in heating process[J].Trans Mater Heat Treat,2008,29(5):89-92.
• [2]Sellars C M,Whiteman J A.Recrystallization and grain growth in hot rolling[J].Metal Science,1979,13(3-4):187-194.
• [3]Beck P A,Kremer J C,Demer L J.Grain growth in high purity aluminum and in aluminum-mag-nesium alloy[J].Trans AIME,1948,175:372-394.
• [4]Zener C.Grains,phases and interactions:an interpretation of microstructure[J].Trans AIME,1948,175:15-51.
• [5]Gladman T.On the theory of the effect of precipitate particles on grain growth in metals[C]∥Proceedings of the Royal Society of London,London,1966:298-309.
• [6]雍歧龙.钢铁中的第二相[M].北京:冶金工业出版社,2006.
• [7]Nordberg H,Aronsson B.Solubility of niobium carbide in austenite[J].Journal of the Iron and Steel Institute,1968,206(12):1263-1266.
• [8]Lifshitz I M,Slyozov V V.The kinetics of precipitation from supersaturated solid solution[J].J Physical Chemistry Solids,1961,19:35-50.
• [9]钟云龙,刘国权,刘胜新,等.新型油井管钢33Mn2V的奥氏体晶粒长大规律[J].金属学报,2003,39(7):699-703.ZHONG Yun-long,LIU Guo-quan,LIU Sheng-xin,et al.Austenite grain growth behavior of steel33Mn2V designed for oil-well tubes[J].Acta Metallurgica Sinica,2003,39(7):699-703.
• [10]刘微.加热温度对含铌Q345钢第二相粒子固溶析出及晶粒长大的影响[J].宽厚板,2004,10(2):24-27.LIU Wei.Effect of heating temperature on solid solution precipitation of second phase particles grain growth[J].Wide and Heavy Plate,2004,10(2):24-27.
• [11]DONG J X,Siciliano F Jr,Jonas J J.Effect of silicon on the kinetics of Nb(C,N)precipitation during the hot working of Nb-bearing steels[J].ISIJ International,2000,40(6):613-618.

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