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    刘胜新, 陈永, 刘国权, 关绍康, 李庆奎, 牛济泰. 中碳钒-钛-氮微合金钢中碳氮化物析出理论计算[J]. 机械工程材料, 2007, 31(1): 78-81.
    引用本文: 刘胜新, 陈永, 刘国权, 关绍康, 李庆奎, 牛济泰. 中碳钒-钛-氮微合金钢中碳氮化物析出理论计算[J]. 机械工程材料, 2007, 31(1): 78-81.
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    LIU Sheng-xin, CHEN Yong, LIU Guo-quan, GUAN Shao-kang, LI Qing-kui, NIU Ji-tai. Theoretical Calculation of Carbonitrides in Medium-carbon V-Ti-N Microalloyed Steel[J]. Materials and Mechanical Engineering, 2007, 31(1): 78-81.
    Citation: LIU Sheng-xin, CHEN Yong, LIU Guo-quan, GUAN Shao-kang, LI Qing-kui, NIU Ji-tai. Theoretical Calculation of Carbonitrides in Medium-carbon V-Ti-N Microalloyed Steel[J]. Materials and Mechanical Engineering, 2007, 31(1): 78-81.
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    中碳钒-钛-氮微合金钢中碳氮化物析出理论计算

    Theoretical Calculation of Carbonitrides in Medium-carbon V-Ti-N Microalloyed Steel

      摘要
    • 摘要: 对35Mn2V钢中TiN和V(CxN1-x)在奥氏体中的平衡固溶量及V(CxN1-x)中的系数进行了理论计算,并研究了碳、氮、钒含量变化对奥氏体中化学成分的影响.基于钢中各析出相之间的相互溶解现象,分析了实际生产用钢中碳氮化物的类型及析出次序.结果表明:该钢中的V(CxN1-x)最高析出温度为955 ℃左右,在900~750 ℃范围内,V(CxN1-x)析出量显著增加,并且在900 ℃以下V(CxN1-x)中的x≥0.5;钢中碳、氮、钒含量的波动对钒的析出有较明显的影响.

       

      Abstract: The equilibrium solubility of TiN and V(CxN1-x),and the compositional coefficient of V(CxN1-x) in austenite of steel 35Mn2V for oil well tubes were calculated.The effects of C,V and N contents fluctuating on austenite composition were also investigated.The kinds and precipitation sequence of the different carbonitrides in the manufacture process of N80 grade hot-rolling 35Mn2V seamless tubes were analyzed based on the hypothesis,of which TiN and V(CxN1-x) show mutual solubility due to the similarity of their crystal structure.The results have shown that the initial precipitated temperature of V(CxN1-x) is about 955 ℃.The amount of V(CxN1-x) increases noticeably in range of 900-750 ℃.The x in V(CxN1-x) is more than 0.5 when the temperature lower than 900 ℃.The fluctuating of carbon,nitrogen and vanadium has visible effect on the precipitation of vanadium.

       

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