夏立芳
,
阎牧夫
金属学报
本文研究了在不同离子渗氮条件下,纯Fe,45,40Cr,42C1Mo和38CrMoAl钢等五种材料离子渗氮层长大动力学的数学模式,在此基础上,利用仿型积分法,推导出离子渗氮层的氮浓度分布函数: C_ε=C_(min)~ε+P_4/ξ_(10)(ξ_1-x)+P_5/ξ_(10)~2(ξ_1-x)~2, C_γ′=C_(min)~γ′+P_1/ξ_(21)(ξ_2-x)+P_2/ξ_(21)~2(ξ_2-x)~2, C_α=C_(min)~α+C_(33)/ξ_(33)~3(ξ_3-x)~3利用上面数学模式,进行计算机仿真,与实验结果符合良好.
关键词:
计算机仿真
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ion nitriding
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nitrogen concentration profile
XIA Lifang YAN Mufu Harbin Institute of Technology
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Harbin
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China Laboratory of Metal Materials and Heat treatment
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Harbin Institute of Technology
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Harbin
,
China
金属学报(英文版)
The mathematical models of the kinetics of the layer growth at different ion nitriding condi- tions of armco iron.steels 45,40Cr,42CrMo and 38CrMoAl have been established.Based on these models the expression of nitrogen concentration profile of ion nitrided layers have been deduced with profile simulating method.They are C_=C_(min)~+(P_4)/(ξ_1-x)+(P_5)/(ξ_(10)~2)(ξ_1-x)~2 C_(γ′)=C_(min)~(γ′)+(P_1)/(ξ_(21))(ξ_2-x)+(P_2)/(ξ_(21)~2)(ξ_2-x)~2 C_α=C_(min)~α+(C_(33))/(C_(33))/(ξ_(32))(ξ_3-x)~3 Using these models,the kinetics of layer growth and the nitrogen concentration profile of ion nitrided layers were sinulated on Apple-Ⅱ computer.Results show that the simulated curves coincide quite well with the experimental data.
关键词:
computer simulation
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