Omar S. Salih
Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite
Salih, Omar S.; Ou, Hengan; Wei, Xingguo; Sun, W.
Abstract
There is a need for improved understanding on the effects of friction stir welding (FSW) on the metallurgical and mechanical properties of aluminium matrix composite (AMC). In this study, AA6092/SiC/17.5p-T6 AMC joints were produced by using FSW with varying tool rotation and traverse speeds. The microstructural characterisation by scanning electron microscopy equipped with electron backscattered diffraction (EBSD) system revealed a substantial grain refinement and a homogeneous distribution of reinforcement particles in the nugget zone. The grain size of the nugget zone was greatly influenced by weld pitch, as a key indicator to control the amount of heat input, exposure time and cooling rate. Vickers microhardness profile across the welding zone revealed a significant difference in microhardness among the base metals, heat affected zone, thermo-mechanically affected zone and nugget zone. The tensile strength of the cross-weld specimens showed a high joint efficiency of about 75% of the base metal combined with relatively high ductility. Low-cycle fatigue properties were investigated in the axial total strain-amplitude control mode (from 0.3% to 0.5%) with
Citation
Salih, O. S., Ou, H., Wei, X., & Sun, W. (2019). Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite. Materials Science and Engineering: A, 742, 78-88. https://doi.org/10.1016/j.msea.2018.10.116
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 28, 2018 |
Online Publication Date | Nov 1, 2018 |
Publication Date | Jan 10, 2019 |
Deposit Date | Nov 8, 2018 |
Publicly Available Date | Nov 2, 2019 |
Journal | Materials Science and Engineering: A |
Print ISSN | 0921-5093 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 742 |
Pages | 78-88 |
DOI | https://doi.org/10.1016/j.msea.2018.10.116 |
Public URL | https://nottingham-repository.worktribe.com/output/1235712 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S0921509318315077 |
Additional Information | This article is maintained by: Elsevier; Article Title: Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite; Journal Title: Materials Science and Engineering: A; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.msea.2018.10.116; Content Type: article; Copyright: © 2018 The Authors. Published by Elsevier B.V. |
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