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Abstract

Research & Development in Material Science

Effect of Cold Air Jet Cooling on Weld Quality in Friction Stir Welding of AA2024-T351

Submission: January 11, 2022;Published: January 24, 2022

DOI: 10.31031/RDMS.2021.16.000890

ISSN : 2576-8840
Volume16 Issue3

Abstract

In this study, AA2024 sheet is Friction Stir Welded (FSW) at different rotational speeds from 800 to 1200rpm and different welding speeds from 50 to 200mm/min. A comparative study on weld quality is conducted between air cooling by natural cooling and cold air jet cooling. Thermal histories are recorded at specific locations from the weld line and the maximum temperature is estimated. Macrostructure, microstructure, and mechanical properties of the weld are also studied. Microstructure analysis indicates that significant grain refinement occurred in the weld nugget. However, the results showed that cold air jet cooling has no significant effect on the weld quality or grain refinement.

Keywords: Friction stir welding; Stir welding; Air cooling; Cold air jet cooling; Natural cooling of stir welding

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