Mechanical property and characterization of 7A04-T6 aluminum alloys bonded by friction stir welding

Li, Jianing; Su, Molin; Qi, Wenjuan; Wang, Chen; Zhao, Peng; Ni, Fei; Liu, Kegao

doi:10.1016/j.jmapro.2020.02.018

Cited by 28 publications

(9 citation statements)

References 36 publications

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“…As the welding situation is fixed, only the rotating speed and welding speed directly determine the welding heat input during the friction stir welding process [ 147 , 148 ], and they affect the grain size and characteristics of strengthening phases in NZ, TMAZ and HAZ. Based on this, many scholars have studied the effect of the relationship between rotating speed and welding speed on the microstructure and properties of the joints [ 46 , 47 , 140 ].…”

Section: Low-heat-input Weldingmentioning

confidence: 99%

“…Low-heat-input welding: such as laser beam welding (LBW), friction stir welding (FSW), and cold metal transfer (CMT) welding. To improve the mechanical properties of age-hardening aluminum alloy joints welded by the low heat input technique, researchers have focused on how to eliminate welding defects [ 41 , 42 , 43 , 44 ], optimize welding parameters [ 45 , 46 , 47 ] and innovate the technique [ 48 , 49 , 50 , 51 , 52 , 53 ].…”

Section: Introductionmentioning

confidence: 99%

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Review of Techniques for Improvement of Softening Behavior of Age-Hardening Aluminum Alloy Welded Joints

et al. 2021

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The softening phenomenon of age-hardening aluminum alloy-welded joints is severe during conventional fusion welding, which increases the likelihood of stress and strain concentration in the joint during the period of service, significantly reduces the mechanical properties compared to the base metal, and represents an obstacle to the exploration of the potential structural performance. This review paper focuses on an overview of the softening phenomenon. Firstly, the welding softening mechanism and the characteristics of age-hardening aluminum alloys are clarified. Secondly, the current main research methods that can effectively improve joint softening are summarized into three categories: low-heat-input welding, externally assisted cooling during welding, and post-weld treatment. The strengthening mechanism and performance change rule of age-hardening aluminum alloy joints are systematically analyzed. Finally, this paper considers the future development trends of further research on joint softening, and it is expected that interest in this topic will increase.

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Section: Low-heat-input Weldingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review of Techniques for Improvement of Softening Behavior of Age-Hardening Aluminum Alloy Welded Joints

et al. 2021

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“…e tool and the work piece to be connected are moved in relation to each other to the point where the tool tracks along the weld interface. e weld cools as the tool passes over it, cementing the two plates [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of AA6063 Welded Joints Using FSW

Rajkumar¹,

Radhakrishnan²,

Rajaganapathy³

et al. 2022

Advances in Materials Science and Engineering

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The AA6063 aluminium alloy has gained widespread use in manufacturing the light-weighted structures which requires a high strength to weight ratio, and it possesses an excellent corrosive resistance in T6 heat-treated (solution heat treated and artificially aged) condition. The process of friction stir welding (FSW) is an emerging joining process of solid state that does not melt and recast the material being welded, as opposed in various other fusion welding processes, which are extensively utilized for combining the structural alloys of aluminium. The process of connecting separate components with external heat has resulted in induced stress on metals. The stir welding using friction was introduced in order to reduce the formation in residual stress during the joining process. The aluminium alloy AA6063 plates were fused utilising the friction stir welding procedure in this study. The studies were carried out using various combinations of speed in rotary condition, speed in transverse condition, and stress in axial condition. The generated joints that are welded was analysed mechanically and microstructurally. The maximum hardness of the mechanical joints produced is 93.25 HV, and the maximum tensile strength is 286.15 N/mm2. According to the results of the response surface analysis, transverse and rotary velocities possess a notable impact in hardness and durability, respectively.

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“…Li et al [10] in their studies examined the effects of the FSW process on the mechanical and metallurgical properties of AA7A04-T6 sheet. They showed that the fine grains produced in the stir zone (SZ) due to the dynamic recrystallization significantly enhance the mechanical properties of the welded area.…”

Section: Introductionmentioning

confidence: 99%

Formability study and metallurgical properties analysis of FSWed AA 6061 blank by the SPIF process

et al. 2021

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In this study, in order to obtain the maximum possible formability in tailor-welded blank AA6061 sheets connected by the friction stir welding (FSW) procedure, the incremental sheet forming process has been utilized. The results are presented both numerically and experimentally. To obtain the forming limit angle, the base and FSWed sheets were formed in different angles with conical geometry, and ultimately, the forming limit angle for the base metal and FSWed sheet is estimated to be 60° and 57.5°, respectively. To explore the effects of welding and forming procedures on AA6061 sheets, experimental studies such as mechanical properties, microstructure and fracture analysis are carried out on the samples. Also, the thickness distribution of the samples is studied to investigate the effect of the welding process on the thickness distribution. Then, the numerical process was simulated by the ABAQUS commercial software to study the causes of the FSWed samples failure through analyzing the thickness distribution parameter, and major and minor strains and the strain distribution. Causes of failure in FSWed samples include increased minor strain, strain distribution and thickness distribution in welded areas, especially in the proximity of the base metal area.

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Mechanical property and characterization of 7A04-T6 aluminum alloys bonded by friction stir welding

Cited by 28 publications

References 36 publications

Review of Techniques for Improvement of Softening Behavior of Age-Hardening Aluminum Alloy Welded Joints

Review of Techniques for Improvement of Softening Behavior of Age-Hardening Aluminum Alloy Welded Joints

Experimental Investigation of AA6063 Welded Joints Using FSW

Formability study and metallurgical properties analysis of FSWed AA 6061 blank by the SPIF process

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