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A Comparative Study on Stationary-Shoulder and Conventional Friction-Stir-Processed Al-6061 Alloy

A Comparative Study on Stationary-Shoulder and Conventional Friction-Stir-Processed Al-6061 Alloy Al-6061 sheets of 3 mm thickness were subjected to stationary-shoulder friction stir processing (S-FSP) and conventional friction stir processing (C-FSP) using similar processing parameters. The results showed that sound C-FSP samples could be obtained by all the selected parameters, while only high rotational (or low traverse) speed was suitable for S-FSP. The surface of S-FSP sample became smooth in comparison with C-FSP sample; moreover, the application of stationary-shoulder refined the grains further in the stir zone and inhibited the coarsening of precipitates in the heat-affected zone. For defect-free FSP samples, the tensile strength of S-FSP sample was a bit lower (about 10%) than that of C-FSP sample; however, the elongation of S-FSP sample increased due to the fine microstructures of fracture location. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Engineering and Performance Springer Journals

A Comparative Study on Stationary-Shoulder and Conventional Friction-Stir-Processed Al-6061 Alloy

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References (34)

Publisher
Springer Journals
Copyright
Copyright © ASM International 2020
ISSN
1059-9495
eISSN
1544-1024
DOI
10.1007/s11665-020-04647-7
Publisher site
See Article on Publisher Site

Abstract

Al-6061 sheets of 3 mm thickness were subjected to stationary-shoulder friction stir processing (S-FSP) and conventional friction stir processing (C-FSP) using similar processing parameters. The results showed that sound C-FSP samples could be obtained by all the selected parameters, while only high rotational (or low traverse) speed was suitable for S-FSP. The surface of S-FSP sample became smooth in comparison with C-FSP sample; moreover, the application of stationary-shoulder refined the grains further in the stir zone and inhibited the coarsening of precipitates in the heat-affected zone. For defect-free FSP samples, the tensile strength of S-FSP sample was a bit lower (about 10%) than that of C-FSP sample; however, the elongation of S-FSP sample increased due to the fine microstructures of fracture location.

Journal

Journal of Materials Engineering and PerformanceSpringer Journals

Published: Feb 11, 2020

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