Peak temperature correlation and Temperature distribution during Joining of az80a mg alloy by fsw a Numerical and experimental Investigation

Abstract

In this modern era, Mg alloys, especially low-density alloys (e.g., newlineAZ80A), are widely used in various automobile and aerospace applications, newlineincluding parts for gearboxes of helicopters, frames of bicycles, struts of landing newlinegear, and hubs of rotors, because of their unique strength (specific strength) and newlinerigidities, attractive capacities of damping, and stable dimension before and newlineafter machining. Most components of Mg alloys are obtained through casting newlinetechniques, and some components are formed through other techniques, such as newlineplastic forming. With the increasing applicability of Mg alloys for various newlineindustries, the demand for an effective and efficient joining technique has newlineincreased. Identification of a suitable joining technique for Mg alloys is newlinechallenging because they are prone to premature cracks, porosity, and severe newlinestresses (residual), making them unsuitable for fusion joining. Therefore, the newlinewelded quality of Mg alloy joints must be investigated to broaden the newlineapplication of these alloys. newlineFriction stir welding (FSW) is an attractive joining methodology for Mg newlinealloys because of its unique advantages, such as avoidance of various welding newlineproblems during fusion joining and generation of finely refined and significant newlinegrain structures at the sub micro level, especially in the zone of stir (nugget). newlineHence, many researchers have employed FSW in the joining of Mg alloys. newlineCompared with other solid-state and unconventional welding techniques, newlinesuch as electron beam welding, laser beam welding, and plasma arc welding, newline