Effect of Post-Weld Heat Treatment on the Solid-State Diffusion Bonding of 6061 Aluminum Alloy

Chen, Chun‐Hao; Sun, Yi; Lai, Yu-Chang; Chang, Shih‐Ying; Chuang, Tung‐Han

doi:10.3390/app11209660

Cited by 11 publications

(2 citation statements)

References 34 publications

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“…Such processes are termed Diffusion Bonding (DB) [ 11 ]. The major advantages of DB relative to other conventional joining methods (such as welding) is that it allows lower bonding temperatures and the ability to join dissimilar materials with large differences in the physical properties [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components

et al. 2023

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Diffusion bonding experiments followed by tensile testing were conducted on cylindrical pairs of AA6061–AA1050 aluminum alloys. The influence of bonding time, atmosphere and surface roughness on the resulting interface strength was studied. Metallurgical characterization was performed to study the quality of the bonded interface for different process conditions, and also to investigate the process of oxide formation on the specimen surface. Finite element analysis of the bonding experiments was used to study the thermo-mechanical fields during the bonding process. Using a cohesive zone approach for modelling the bonded interface, the bond strength for the different process parameters was quantified. The results demonstrate that high bond strength can be obtained even for specimens bonded in an air furnace, provided the surface roughness is low. When the surface roughness increases, specimens bonded in air show a reduction in interface strength, which is not observed for specimens bonded in vacuum. Inspection of the bonded interface suggests that this reduction in interface strength can be attributed to oxidation and pockets of air trapped between the asperities of the contact surface, which hinder diffusion and plastic flow.

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Section: Introductionmentioning

confidence: 99%

The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components

et al. 2023

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“…Hence, the welding of this dissimilar combination could open the door for a new joint design in order to overcome those drawbacks. Additionally, aluminium alloys have the special ability to preserve its FCC structure even at high temperatures, which allows for solid-state welding methods to be used on them without any allotropic change [12,13].…”

Section: Introductionmentioning

confidence: 99%

Studying the STA effects on aluminium alloy joints by friction welding

Bakkiyaraj,

Ananth,

Sivamaran

et al. 2023

Phys. Scr.

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This article examines the properties of joints fabricated by friction welding (FW) using AA6061-T6 and AA7075 as examples of both similar and dissimilar metals. It also looks at how heat treatment after welding affects the metallurgical characteristics of the joint. The heat treatment method under investigation combines solutionizing heat treatment with synthetic ageing (STA). The tensile characteristics, microhardness, and microstructure of the as-welded and STA-treated welded specimens are assessed in the paper using mechanical testing equipment and metallurgical characterization methods. The findings demonstrate that the joint characteristics are enhanced by precipitate nucleation occurring in the joint interface of the FW similar and dissimilar joint under STA treatment. On the other hand, the STA influence on the tensile strength (TS) of joints made with AA7075 was greater than that of similar joints made with AA6061-T6, as well as dissimilar joints made with both AA6061-T6 and AA7075. Additionally, after STA treatment, the similar joints showed a uniform distribution of hardness. However, in the dissimilar joint after STA treatment, the hardness dropped suddenly on the AA6061-T6 side, specifically from the partially deformed zone (PDZ) towards the heat affected zone (HAZ).

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Influence of the scale effect on the constraint effect in welded joints with soft interlayers

Valerievich

Zhgut

Viktorovich

et al. 2023

Int J Adv Manuf Technol

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The in uence of the scale effect on the strength of mechanically inhomogeneous welded structures with a soft zone was studied. The investigated welded samples were made of two 12Kh18N10T austenitic steel plates and a low-carbon ferritic insert connected between them by two dissimilar welded joints performed by electron beam welding. Tensile strength as a function of relative thickness for tensile specimens with a thickness of 1.2 to 10 mm was plotted. It was shown that with a relative thickness of the soft zone in the range from 0.2 to 0.5, the scale effect did not manifest during tension. This can be explained by low plastic compressive deformations in the soft zone after heat treatment, which typically leads to a decrease in the constraint effect due to the Bauschinger effect.

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Effect of Post-Weld Heat Treatment on the Solid-State Diffusion Bonding of 6061 Aluminum Alloy

Cited by 11 publications

References 34 publications

The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components

The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components

Studying the STA effects on aluminium alloy joints by friction welding

Influence of the scale effect on the constraint effect in welded joints with soft interlayers

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