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Journal of Materials Engineering and Performance
Published in: Journal of Materials Engineering and Performance 12/2016

13-10-2016

Improvement in Joint Strength of Spray-Deposited Al-Zn-Mg-Cu Alloy in Underwater Friction Stir Welding by Altered Temperature of Cooling Water

Authors: Haimei Liang, Keng Yan, Qingzhao Wang, Yong Zhao, Chuan Liu, Hao Zhang

Published in: Journal of Materials Engineering and Performance | Issue 12/2016

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Abstract

We improved the joint properties of spray-deposited Al-Zn-Mg-Cu alloy during underwater friction stir welding at cooling media temperatures of 8.6, 24.8 and 58.6 °C, respectively. The joint welded at high temperature (58.6 °C) showed a high tensile strength (467.18 MPa) and improved elongation. Its thermal cycle indicates preheating and slow cooling, which created a mild and uniform temperature gradient on both sides of the joint. DSC, SEM and EDS, and XRD analyses indicate that high-temperature cooling medium facilitated re-dissolution of the strengthening phases in the matrix, to strengthen the joint. Al32(Mg,Zn)49 exhibited a semi-coherent structure with matrix detected in the joint welded in a high-temperature medium. The high-temperature cooling medium is most efficient for joint optimization.
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Metadata
Title
Improvement in Joint Strength of Spray-Deposited Al-Zn-Mg-Cu Alloy in Underwater Friction Stir Welding by Altered Temperature of Cooling Water
Authors
Haimei Liang
Keng Yan
Qingzhao Wang
Yong Zhao
Chuan Liu
Hao Zhang
Publication date
13-10-2016
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 12/2016
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-016-2383-y

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