An Assessment on Mechanical and Microstructural Properties of Friction Stir Welded 316 L Austenitic Stainless Steel

Abstract:

The aim of the present study is to investigate on mechanical and microstructural properties of Friction Stir Welded 316 L austenitic stainless steel. Defect free weld were produced at a tool rotational speed (N) of 600 rpm, transverse speed (V) of 45 mm/min, axial force (F) of 11 kN and tool tilt angle (T) of 1.5⁰.Mechanical properties such as Ultimate Tensile strength (UTS), Percentage Elongation (PE), Impact Strength (IS) were evaluated on the welded specimen. Further,micro hardness and microstructural analysis were carried out the transverse direction to the welded specimen. No significance of HAZ in the welded joint with observation of sigma phase precipitation revealed by Groesbeck and Modified Mukrami reagent. Further,FESEM with Electron Dispersive Spectroscopy (EDS) were obtained at the stir zone to ensure constituent of alloying elements present and ensuring no secondary phases found in the stir zone.

• Periodical: Applied Mechanics and Materials (Volume 787)
• Pages: 381-385
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.787.381
• Online since: August 2015
• Authors: S. Shashi Kumar*, N. Murugan, K.K. Ramachandran
• Keywords: Austenitic Stainless Steel, Friction Stir Welding, FSW Tool, Mechanical Properties

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