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- Title
EFFECT OF GEOMETRY OF TOOL PIN PROFILE ON THE MECHANICAL AND METALLOGRAPHIC CHARACTERISTICS OF FRICTION STIR WELDED AA 5052-H32 ALUMINIUM ALLOY.
- Authors
Shanavas, S.; Dhas, J. Edwin Raja; Davim, J. Paulo
- Abstract
Geometry of tool pin profiles plays a significant role in deciding the quality of weld in friction stir welding process. In the present study, the effect of tool pin profile on the mechanical and metallographic characteristics of the friction stir welding on AA 5052- H32 aluminium plates was investigated. Various geometry of tool pin profile such as cylindrical tapered, hexagon tapered, pentagon tapered, square tapered, and, triangular tapered, having a constant circumscribed circle diameter were used for the study and the results are compared. Other weld parameters such as tool tilt angle, rotational speed, welding speed were kept constant based on the response from several trial runs conducted. Mechanical test results reveal that highest tensile strength and hardness value were obtained with tapered square tool pin profile and the joint failed under ductile mode. Fine equiaxed grain structure was observed at the stir zone with tapered square tool pin profile. EDS result on plate welded by tapered square tool pin profile shows that there is no β-phase (Mg2Al3) precipitate at the stir zone and therefore no sensitization of segregation as the result of FSW, thereby resists localized intergranular corrosion at the weld site.
- Subjects
WELDED joint testing; ALUMINUM plates; FRICTION stir welding; METALLOGRAPHY; TENSILE strength; HARDNESS
- Publication
Journal of Manufacturing Technology Research, 2017, Vol 9, Issue 1/2, p81
- ISSN
1943-8095
- Publication type
Article