A method for computing diffusion coefficients in multiphase systems
Tóm tắt
Amethod for computing the effective values of diffusion coefficients in phases on the basis of a mathematical model of the process of diffusion saturation in multiphase systems is suggested. Diffusion coefficients are determined with the use of the results of solution of a direct diffusion problem. Regular features of the influence of diffusion coefficients on the thickness of phases in the diffusion zone are established.
Tài liệu tham khảo
Huang Wenbo, Meng Jilong, and Wu Jing, “A new model of ion-nitriding based on variant diffusion coefficient,” J. Harbin Inst. Technol., No. 2, 278–281 (2002).
M. Keddam, M. E. Djeghlal, and L. Barralier, “A diffusion model for simulation of monolayer growth γ′ of the nitrided pure iron,” in: The 9th Int. Seminar Nitriding Technology, Warsaw, Poland (2003), pp. 161–169.
M. G. Krukovich, “Simulation of nitriding process,” Metalloved. Term. Obrab. Met., No. 1, 24–31 (2004).
H. Du, L. Sproge, and J. Agren, “Modeling of nitrocarburizing,” in: Proc. Second ASM–Heat Treatment Surface Engineering [C].[s.l.]:[s.n.] (1993), pp. 719–724.
Yu. M. Lakhtin and Ya. D. Kogan, Nitriding of Steel [in Russian], Mashinostroenie, Moscow (1976).
J. Ratajski, “Model of growth kinetics of nitrided layer in the binary Fe-N system,” in: The 9th Int. Seminar Nitriding Technology, Warsaw, Poland (2003), pp. 149–159.
Liu Jie, Li Xiaobo, and Xue Aiwen, “A study of the calculating methods of carbon and nitrogen atom diffusion coefficients in steel,” J. Taiwan Heavy Machinery Inst., 19(1), 43–49 (1998).