Simulation of Tensile Behavior in Friction Stir Welded and Superplastically Formed-Titanium 6Al-4V alloy

摘要

A hybrid numerical and experimental study was undertaken to evaluate the performance of friction stir welded (FSW) and superplastically formed friction stir welded (SPF-FSW) titanium joints. This paper presents the numerical models which were developed to simulate mechanical response of FSW and SPF-FSW joints. The simulation results were compared to experimentally determined behavior characteristics of the joints to assess the validity of the modeling approach. It was found that numerical modeling have simulated successfully the tensile behavior of a FSW joint agreeing with the experimental results. This method also adequately simulated the tensile behavior of a SPF-FSW joint, but due to geometrical influences, there are discrepancies between the numerical results and experimental observations.