Date
2019Author
Sajadifar, Seyed VahidMoeini, GhazalScharifi, EmadLauhoff, ChristianBöhm, StefanNiendorf, ThomasSubject
600 Technology 620 Engineering AluminiumlegierungRührreibschweißenMechanische EigenschaftMikrostrukturQuenchingWärmebehandlungMetadata
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On the Effect of Quenching on Postweld Heat Treatment of Friction-Stir-Welded Aluminum 7075 Alloy
Abstract
This work focuses on the effect of postweld heat treatment (PWHT) on the mechanical properties and microstructural evolution of aluminum 7075 alloy processed via friction stir welding (FSW). FSW is known to be capable of grain refinement in the nugget zone (NZ). Two different quench media (water and air) were employed for PWHT. Regardless of the quench media, the PWHT led to the occurrence of grain growth in the NZ of the FSWed aluminum 7075 alloy. Abnormal grain growth occurred in the water quenched specimen. It is shown that ductility and strength of FSWed aluminum 7075 alloy are strongly dependent on the quenching rate. Changes in the mechanical properties and microstructure reveal that only at lower cooling rate this alloy is prone to the formation of precipitate-free zones (PFZs) in the vicinity of grain boundaries. Eventually, the PFZs deteriorate mechanical properties of this alloy.
Citation
In: The Journal of Materials Engineering and Performance Volume 28 / Issue 8 (2019) , S. 5255-5265 ; eissn:1544-1024Additional Information
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections.Citation
@article{doi:10.17170/kobra-202312229269,
author={Sajadifar, Seyed Vahid and Moeini, Ghazal and Scharifi, Emad and Lauhoff, Christian and Böhm, Stefan and Niendorf, Thomas},
title={On the Effect of Quenching on Postweld Heat Treatment of Friction-Stir-Welded Aluminum 7075 Alloy},
journal={The Journal of Materials Engineering and Performance},
year={2019}
}
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2023-12-22T09:41:26Z 2023-12-22T09:41:26Z 2019 doi:10.17170/kobra-202312229269 http://hdl.handle.net/123456789/15318 This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ aluminum 7075 friction stir welding mechanical properties microstructure postweld heat treatment 600 620 On the Effect of Quenching on Postweld Heat Treatment of Friction-Stir-Welded Aluminum 7075 Alloy Aufsatz This work focuses on the effect of postweld heat treatment (PWHT) on the mechanical properties and microstructural evolution of aluminum 7075 alloy processed via friction stir welding (FSW). FSW is known to be capable of grain refinement in the nugget zone (NZ). Two different quench media (water and air) were employed for PWHT. Regardless of the quench media, the PWHT led to the occurrence of grain growth in the NZ of the FSWed aluminum 7075 alloy. Abnormal grain growth occurred in the water quenched specimen. It is shown that ductility and strength of FSWed aluminum 7075 alloy are strongly dependent on the quenching rate. Changes in the mechanical properties and microstructure reveal that only at lower cooling rate this alloy is prone to the formation of precipitate-free zones (PFZs) in the vicinity of grain boundaries. Eventually, the PFZs deteriorate mechanical properties of this alloy. open access Sajadifar, Seyed Vahid Moeini, Ghazal Scharifi, Emad Lauhoff, Christian Böhm, Stefan Niendorf, Thomas doi:10.1007/s11665-019-04252-3 Aluminiumlegierung Rührreibschweißen Mechanische Eigenschaft Mikrostruktur Quenching Wärmebehandlung acceptedVersion eissn:1544-1024 Issue 8 The Journal of Materials Engineering and Performance 5255-5265 Volume 28 false
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Urheberrechtlich geschützt