Effects of tool pin profile on tensile and wear behaviour of friction stir welded AA6101-T6 and AA1350 alloys

Author:

Ashok kumar R.,Muneeswaran R.,Saravana Mohan M.,Rengarajan Sathish,Raghav G.R.,Nagarajan K.J.

Abstract

In Friction Stir Welding (FSW) technique, hard rotating tool with specially profiled pin is plunged into base metals and traversed along the interface of the plates, generating the frictional heat and plasticizing the base metals. This leads to flow of materials and makes solid state joint. AA6101-T6 and AA1350 alloys are widely applied in electrical bus bars, because of their high electrical conductivity. In this present work, these two alloys are joined by varying the pin profile of the tools as circular, triangular, square and hexagonal. Of these four joints, the joint fabricated by circular pin profiled tool exhibits poor tensile and wear properties whereas hexagonal pin profiled tool exhibits better tensile and wear properties. This is due to the volume defects and grain refinement at stirred zone.

Publisher

EDP Sciences

Subject

Materials Chemistry,Metals and Alloys,Mechanics of Materials,Computational Mechanics

Reference19 articles.

1. Welding of dissimilar aluminium alloys

2. Microstructures and mechanical properties of friction stir welded dissimilar steel-copper joints

3. Thomas W.M., Nicholas E.D., Needham J.C., Church M.G., Templesmith P., Dawes C.J., ‘Friction stir welding’, International patent application No. PCT/GB92102203 and Great Britain patent application no. 9125978.8 (1991)

4. Effect of tool rotational and welding speeds on microstructural and mechanical characteristics of friction stir welded A319 cast Al alloy

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