THERMAL ANALYSIS ON FRICTION STIR WELDED ALUMINUM PLATES

In order keeping in mind with the high advanced strength of aluminum alloys, some automotive manufacturers are looking forward to being introduced high strength Al-alloys like AA7075, AA6061, AA6068 etc. that have optimum mechanical properties. The joining of these Al-alloys by fusion weldings like regular weldings such as arc welding and tungsten inert gas welding will not lead to better mechanical properties. In the last decade, friction stir welding, one of the best-advanced welding combinations are employed for Al-alloys as it improves mechanical properties and overcomes constraints of the ordinary welding processes. FSW is plasticized state joining technique in which is no melting is involved and it also energy proficient and free from consumables and radiation. It can produce acceptable quality joints. The standard and strength of the joints which can be estimated and calculated in terms of the improved mechanical properties like yield strength, hardness, bending strength, impact strength, toughness etc, of the weld joint. In this study, the same type joining of Aluminium alloys (AA6061 and AA6068) by friction stir welding process will be done and discussed in detail. The most significant parameters like thespeed of revolution of the pin, traverse speed, and geometry of the pin will be considered to study their effect on different mechanical properties such as tensile strength hardness test. The effect of process parameters on mechanical properties will be done by analysis of variance. Thus, the feasibility of the FSW process for similar joining of aluminum alloy will be assessed.