Weld temperature effects during friction stir welding of dissimilar aluminum alloys 6061-t6 and 7075-t6

Cole, Edward G.; Fehrenbacher, Axel; Duffie, Neil A.; Zinn, Michael; Pfefferkorn, Frank E.; Ferrier, Nicola

doi:10.1007/s00170-013-5485-9

Cited by 118 publications

(64 citation statements)

References 21 publications

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“…Guo et al [2] worked on friction stir welding of the same alloys, and they concluded that the increase of welding speed which resulted in lower heat input created finer grains and higher UTS. Cole et al [13] showed that the strength of friction stir weld between AA7075 and AA6061 was improved by decreasing power input. This decrease of heat input influenced positively the mechanical properties of aluminum alloys which were more sensitive to the weld temperature due to lower precipitation distribution [13].…”

Section: Introductionmentioning

confidence: 99%

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Daniolos

Pantelis

2016

Int J Adv Manuf Technol

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In the present work, similar and dissimilar friction stir welds have been produced on 6-mm-thick plates of AA6082-T6 and AA7075-T651. The microstructural characteristics and the mechanical response of both similar and dissimilar welds were investigated aiming to determine the major differences between them. Material mixing of the dissimilar weld nugget, which was created after the welding process, was studied in order to determine the produced different areas and their dominant alloying elements in this zone. Microstructural investigation was made in the welding zones of similar and dissimilar friction stir welds and indications of partial dynamic recrystallization were observed in the thermomechanically affected zone of the similar welds. Transverse and longitudinal microhardness distributions determined the heat affected zone as the weaker area in the welded specimen. After tensile testing, the fracture of the similar and the dissimilar welds at heat affected zone demonstrated the good bonding and weld quality of the similar and dissimilar weld nuggets.

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Section: Introductionmentioning

confidence: 99%

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Daniolos

Pantelis

2016

Int J Adv Manuf Technol

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“…For that reason, it is hard to achieve very high strength of the welded joints for these two aluminum alloys [34]. However, the calculated efficiency is relatively high compared to the previous published data [40][41][42][43][44]. On a centerline normal to the welding direction across the nugget, Figure 6 shows the Vickers micro-hardness profiles of specimens B2 and C3, which exhibited the highest and lowest tensile strength, respectively.…”

Section: Resultsmentioning

confidence: 83%

“…For instance, the FSW of these dissimilar alloys fully utilizes both materials [32,33]. Although the FSW of similar and dissimilar materials has been used in many research studies [34][35][36][37][38][39], limited interest was found in literature regarding these two series of aluminum alloys [40][41][42][43][44]. In all of these articles, weld temperature, process parameters and the placement of materials on the advancing side (AS) and retreating side (RS) were examined without any referring to the clamping system and fixtures.…”

Section: Introductionmentioning

confidence: 99%

“…They found that the maximum joint strength of 207 MPa was resulted by this configuration. In the work of Cole et al [42], the AA6061 alloy was also placed on the AS and the welding tool was shifted toward the AA7075 to improve the joint strength. Other than that, the same material position was made by İpekoğlu and Çam [41] to investigate the behavior of AA7075-AA6061 friction stir weldments under different temper conditions and post-weld heat treatment.…”

Section: Introductionmentioning

confidence: 99%

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A simplified design of clamping system and fixtures for friction stir welding of aluminium alloys

Hasan¹,

Ishak²,

Rejab³

2015

J. Mech. Eng. Sci.

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Sound friction stir welds could be attained by using an active design of backing/clamping system with a proper selection of the welding parameters. This work presented a simplified design of fixtures and backing plates to be used for friction stir welding of aluminum alloys. The test-rig was constructed to prevent dispersal or lifting of the specimens throughout the joining process and to ensure uniform distribution of temperature along the plates. The workpieces were subjected to uniform lateral and vertical pressures by means of bolts and nuts. Compound backing plates and pressure bars with additional side plates were included to increase the heat sink. Several coupons of dissimilar aluminum alloys AA7075 and AA6061 were joined to inspect the validity of this design. The tests showed promising results with defects-free welds, good strength and smooth surface finish without geometric imperfection and gap creation between the welded specimens. Efficiency of the joint reached its maximum value of about 82% with respect to the ultimate strength of the AA6061 alloy at 1100 rpm rotation speed and 300 mm/min feed. These results encourage using and improving the present design for future studies of friction stir welding.

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“…Cole et al [19] studied temperature effects during FSW for 6061-T6 and 7075-T6 Al. 6061-T6 has high solidus temperature so placed on AS.…”

Section: Elk Asia Pacific Journals -Specialmentioning

confidence: 99%

Friction Stir Welding of Aluminum Alloys 6xxx Series: A Review

2015

International Conference on Advancements and Recent Innovations in Mechanical, Production and Industrial Engineering

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Abstract-Friction stir welding is a relatively new method of solid state joining of materials using non consumable tool. FSW is used in joining of metallic alloys which are difficult to weld using conventional method. The current paper focusses on the welding of the 6xxx series aluminum alloy. The following study is analysis of the effect of parameters and tool geometry on the microstructure, tensile strength and hardness of the joint obtained using FSW.

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Weld temperature effects during friction stir welding of dissimilar aluminum alloys 6061-t6 and 7075-t6

Cited by 118 publications

References 21 publications

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

A simplified design of clamping system and fixtures for friction stir welding of aluminium alloys

Friction Stir Welding of Aluminum Alloys 6xxx Series: A Review

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