Dept. of Mechanical Engineering, NIT, Meerut
Online published on 4 May, 2019.
Aluminium is a soft, lightweight metal recognized in dull silvery white appearance. It is the second most plentiful element on the earth. Aluminium has become an important metal in the 19th century owing to its light weight and corrosive resistant properties. Dissimilar Al alloy welds are important in structural, automotive and aerospace applications and need attention as it substitutes the conventional welding techniques with low cost and high efficiency one like friction stir welding (Priya et al 2010). This paper focuses on the friction stir welding of wrought aluminium alloys 6063 and cast aluminium alloy A319 that are extremely highly used in the structural and automotive industries. This paper presents a study of the effect of FSW process parameters on the desired responses using the design of experimental approach. It analyse the relationships of various FSW process parameters selected for study and their effect on weld characteristics like ultimate tensile strength, yield strength, percentage elongation and hardness on the development of mathematical models. Response Surface Methodology (RSM) is used to develop regression equations relating to response characteristics and process parameters. Results of the models are presented in graphical form for better understanding. Validation of the mathematical modeling of FSW tool probe geometry effects on the aluminum alloy weld is presented using analysis of variance (ANOVA) regression models.
A319 and AA6063 alloys, FSW, welding procedure, FSW process quality, mechanical properties
