The present study investigated the effect of heat treatment (pre- and post-weld) on microstructure mechanical properties an SS304L/IN718 dissimilar rotary friction welded alloy. Optical scanning electron micrographs joints in solution-treated (ST), aged (STA), post-weld (PWHT) conditions revealed defect-free welds. Furthermore, various zones were observed across weld region, namely fully deform...

the microstructure of hp stainless steel in aged and aged + solution annealed conditions and solutionized alloy 800 was characterized by optical microscopy, scanning electron microscopy (sem), and transmission electron microscopy (tem) equipped by eds. all phases present in the above condition were described. the effects of solution annealing heat treatment temperature on the microstructure, te...

Traditional ultrasonic imaging methods have a low accuracy in the localization of defects austenitic welds because anisotropy and inhomogeneity cause distortion wave propagation paths anisotropic media. The distribution grain orientation influences velocity paths. To overcome this issue, finite element analysis (FEA)-based methodology for is proposed study. method uses database to synthetically...

Joining of the similar & dissimilar materials alloys using heat friction in currently being used, especially for non-ferrous which are considered as non-weldable alloys. Al 2024-T6 6061-T6 having length 70mm and 12mm diameter were welded by welding process. Similar samples obtained applying different combinations parameters like pressure 30bar, forging from 50 to 60 bar, rotational speed 22...

this paper aims at investigating the effects of weld nugget size and expulsion on the mechanical properties of low carbon steel resistance spot welds using tensile-shear test. mechanical performance of spot welds are described in terms of failure mode, peak load and failure energy obtained from the tensile-shear test. the effects of voids and porosity as well as electrode indentation associated...