COMPARISON OF EFFECTS OF TRIANGULAR AND HEXAGONAL TOOL PIN PROFILES ALONG WITH OTHER WELDING PARAMETERS ON MECHANICAL PROPERTIES OF FRICTION STIR WELDED JOINT OF AS41A

MECHANICAL ENGINEERING

In recent times, there are numerous requirements for the material having properties like better strength, light weight, better chemical properties and other merits. Here, the Friction Stir Welding is considered and the effects on the result of the quality of the weld joint. The welding parameters of tool pin profiles, rotational speeds and welding speeds are considered for the effects on the results. The results obtained here of the weld joint are of mechanical properties like ultimate tensile strength and hardness. The base material considered for the current research is Mg AS41A alloy. Besides the base material considered, the tool material considered here is HCHCr D2 Tool Steel. There are two different tool pin profiles selected here in this research work: Triangular tool pin profile and Hexagonal tool pin profile. The best result is obtained in the weld joint manufactured at 1500 rpm rotational speed and 17 mm/minute with hexagonal tool pin profile. The weld joint formed by the triangular tool pin profile gave poor results. This research paper discusses the mechanical properties like ultimate tensile strength and hardness of the weld joints obtained in this research. Also, the comparison between the hexagonal tool pin profiles and triangular tool pin profiles is made in this research work.

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