Effect of Aging Heat Treatment on Joint Properties of Dissimilar Friction StirWelded 2024-T4 and 7075-T6 Aluminum Alloys

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Safarbali B.; SHAMANIAN M.; ESLAMI A.

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Journal: JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN Year:2019 | Volume:5 | Issue:1 Page(s): 1-11

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Title

Effect of Aging Heat Treatment on Joint Properties of Dissimilar Friction StirWelded 2024-T4 and 7075-T6 Aluminum Alloys

Author(s)

Safarbali B. | SHAMANIAN M. | ESLAMI A. | Issue Writer Certificate

Keywords

Friction Stir Welding

Heat treatments

Microstructure

Mechanical properties

Abstract

In present study, the effect of heat treatment after Friction Stir Welding dissimilar welds 7075-T6 and 2024-T4 aluminum alloys were investigated. Friction Stir Welding was performed at a constant rotation speed of 1140 rpm and welding speed 32 mm/min. After welding samples are taken under various heat treatment processes at different aging temperature and time period. Microstructural observations, phase analysis characterization and Mechanical properties were performed on welded before and after heat treatment in cross section of welds joint. The results showed that postweld heat treatment causes abnormal grain growth turns destructive effect on the Mechanical properties, while formation of fine and uniform precipitation recovery strength and ductility of welds joints. It is found heat treatment based on 7075-T6 and 2024-T6-procedure has highest and lowest impact on the restore of weld strength. Tensile test indicate that fracture occurred on the interface between TMAZ and HAZ in retreating side (7075) at as-weld joint, if that failure happens in the stir zone by applying PWHT. Surface fracture suggested fractures in PWHT samples are predominantly inter-granular, while in as-weld joint the fractures of joints are mostly trans-granular.

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APA: Copy

Safarbali, B., SHAMANIAN, M., & ESLAMI, A.. (2019). Effect of Aging Heat Treatment on Joint Properties of Dissimilar Friction StirWelded 2024-T4 and 7075-T6 Aluminum Alloys. JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN, 5(1 ), 1-11. SID. https://sid.ir/paper/269230/en

Vancouver: Copy

Safarbali B., SHAMANIAN M., ESLAMI A.. Effect of Aging Heat Treatment on Joint Properties of Dissimilar Friction StirWelded 2024-T4 and 7075-T6 Aluminum Alloys. JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN[Internet]. 2019;5(1 ):1-11. Available from: https://sid.ir/paper/269230/en

IEEE: Copy

B. Safarbali, M. SHAMANIAN, and A. ESLAMI, “Effect of Aging Heat Treatment on Joint Properties of Dissimilar Friction StirWelded 2024-T4 and 7075-T6 Aluminum Alloys,” JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN, vol. 5, no. 1 , pp. 1–11, 2019, [Online]. Available: https://sid.ir/paper/269230/en

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