Review on thermo-mechanical and material flow analysis of dissimilar friction stir welding
Rituraj Bhattacharjee, Pankaj Biswas
Abstract
Joining dissimilar materials by friction stir welding (FSW) is a tedious job. Nowadays it is very important to perform numerical simulation and predict beforehand the temperature gradient, material intermixing, and residual stress distribution without performing hit and trail experimental jobs in turn reducing the time and cost. Computational methodologies for joining dissimilar materials such as steel to steel, steel-aluminium, aluminium-magnesium, etc., are rarely found in the past review articles. The researchers used current breakthroughs in computational fluid dynamics (CFD) and computational solid mechanics (CSM) techniques to model the friction stir welding (FSW) process of diverse dissimilar materials in this work. In the recent study, material flow behaviour, thermo-mechanical, and residual stress analysis of FSW process is overviewed which included the following topics i.e. different approach followed in thermal analysis, different numerical approaches followed to predict material flow behaviour, residual stress distribution, and defect detection. The detail about the following topics is discussed in detail in the following sections.