Home CONTACT Kovove Materialy-Metallic Materials 2019 Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 4, pp.275–285

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Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 4, pp.275–285

Title: Effect of the process parameters on magnesium alloy using the submerged friction stir process
Author: R. Sankar, V. S. Senthilkumar
Abstract: In the present work, the hot rolled AZ31B magnesium alloy plate of 6 mm thickness is
subjected to a friction stir process (FSP) under submerged condition. The process parameters
of FSP considered are tool pin profile (simple cylindrical, stepped cylindrical, stepped square),
rotational tool speed, and traverse speed. The output responses considered in this study are
microhardness, elongation, and ultimate tensile strength. TOPSIS (Technique for Order of
Preference by Similarity to Ideal Solution), a new method is used for optimizing the multiple
responses. ANOVA showed the tool pin profile as a most influencing parameter. The results
indicated the stepped square pin profiled tool with a rotational speed of 1000 rpm and a
traverse rate of 30 mm min−1 exhibited a superior surface property by grain refinement, which
increased the microhardness and mechanical properties in the nugget zone of the processed
material.
Keywords: submerged friction stir processing, welding, processing, TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution), microstructure, tool pin profiles, magnesium alloy, mechanical properties
Published online: 25-Jun-2019
Year: 2019, Volume: 57, Issue: 4 Page From: 275, Page To: 285
doi:10.4149/km_2019_4_275


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