Analysis of Diffusion Bonding Using Finite Element Techniques

Diffusion bonding is a process by which two well-prepared surfaces are joined by the application of temperature, pressure and time. Temperatures applied varied from 0.5 to 0.8 of absolute melting of the lower melting point of the material in case of dissimilar materials. Pressures applied are a small fraction of room temperature yield strength to avoid macroscopic deformation. Times can be from few minutes to several hours. Surface preparation plays an important role. Analysis is done by modeling the faying surfaces. The area fraction bonded obtained in FEM is correlated with experimental results. By this method we can reduce the number of experiments to obtain the poreless joint.
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