Numerical solutions of diffusion-controlled migrating interface problems for studying brazing SS304/BNi-2/SS304 joint
A process of brazing SS304/BNi-2/SS304 joint was described mathematically by a system of three differential equations based on the diffusion theory and the consideration of migrating liquid/solid interface. This diffusion-controlled moving interface modeling was capable of tracking precisely the motion interface using an alternative approach and so would be used to predict the dissolution and isothermal solidification process during brazing. The temperature-dependent diffusion coefficient, used in the analytical modeling, of solute elements into the base alloys during brazing and the maximum brazing gap was mathematically determined together with experimental data from brazing the wedge shape joint specimen of SS304/BNi-2/SS304. The solute concentration profile during brazing, the motion of liquid/solid interface and the time required to complete isothermal solidification were obtained by the analytical modeling. The mutual effects of brazing temperature, joint thickness and isothermal solidification time were also discussed.
Brazing Diffusion Liquid/Solid interface Diffusivity Isothermal solidification BNi-2 304 stainless steel
Hu Chen Jianming Gong Shan-Tung Tu Wenchun Jiang
College of Mechanical and Power Engineering, Nanjing University of Technology, China College of Mechanical and Power Engineering, Nanjing University of Technology, China School of Mecha
国际会议
国际断裂力学2007年会(Fracture Mechanics and Applications 2007)
长沙
英文
131-140
2007-11-01（万方平台首次上网日期，不代表论文的发表时间）