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Article

Research on Laser-TIG Hybrid Welding of 6061-T6 Aluminum Alloys Joint and Post Heat Treatment

by
Hongyang Wang
*,
Xiaohong Liu
and
Liming Liu
Key Laboratory of Liaoning Advanced Welding and Joining Technology & School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Metals 2020, 10(1), 130; https://doi.org/10.3390/met10010130
Submission received: 22 November 2019 / Revised: 2 January 2020 / Accepted: 7 January 2020 / Published: 15 January 2020
(This article belongs to the Special Issue Structure and Properties of Aluminium Alloys)
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Abstract

The 6061-T6 aluminum (Al) alloys was joined by the laser induced tungsten inert gas (TIG) hybrid welding technique. It mainly studied the influences of welding parameters, solution, and aging (STA) treatment on the microstructure and tensile properties of Al alloy hybrid welding joints. Microstructures of the joints were also analyzed by optical microscopy and transmission electron microscopy. Results showed that the laser induced arc hybrid welding source changed the microstructure of the fusion zone and heat effect zone. STA treatment effectively improved the mechanical properties of the softening area in the hybrid welding joint, whose values of the tensile strength and elongation were on average 286 MPa and 20.5%. The distribution of the reinforcement phases and dislocations distributed were more uniform, which improved the property of STA treated joint.
Keywords: Al alloy; laser induced arc hybrid welding; heat treatment; microstructure Al alloy; laser induced arc hybrid welding; heat treatment; microstructure

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MDPI and ACS Style

Wang, H.; Liu, X.; Liu, L. Research on Laser-TIG Hybrid Welding of 6061-T6 Aluminum Alloys Joint and Post Heat Treatment. Metals 2020, 10, 130. https://doi.org/10.3390/met10010130

AMA Style

Wang H, Liu X, Liu L. Research on Laser-TIG Hybrid Welding of 6061-T6 Aluminum Alloys Joint and Post Heat Treatment. Metals. 2020; 10(1):130. https://doi.org/10.3390/met10010130

Chicago/Turabian Style

Wang, Hongyang, Xiaohong Liu, and Liming Liu. 2020. "Research on Laser-TIG Hybrid Welding of 6061-T6 Aluminum Alloys Joint and Post Heat Treatment" Metals 10, no. 1: 130. https://doi.org/10.3390/met10010130

APA Style

Wang, H., Liu, X., & Liu, L. (2020). Research on Laser-TIG Hybrid Welding of 6061-T6 Aluminum Alloys Joint and Post Heat Treatment. Metals, 10(1), 130. https://doi.org/10.3390/met10010130

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