Electrically assisted friction stir welding for joining Al 6061 to TRIP 780 steel

Liu, Xun; Lan, Shuhuai; Ni, Jun

doi:10.1016/j.jmatprotec.2014.12.002

Cited by 114 publications

(52 citation statements)

References 28 publications

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“…IMC layer (Al 5 Fe 2 , FeAl,FeAl 3 ) was discovered at the joining interface and a blend of brittle and ductile fracture occurred at the interface. In addition to these, numerical simulation was employed to optimize the Al/steel FSW [12]. There is a fact we can't ignore that even though successful FSW of Al/steel have been achieved and thick interlayer composed of brittle IMC were avoided, joint interface still exist a mass of brittle IMC such as FeAl, Al 5 Fe 2 and FeAl 3 [10][11][12][13], which could result in brittle fracture.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Dissimilar friction stir welding of 6061 Al to 316 stainless steel using Zn as a filler metal

Zheng

Feng

Shen

et al. 2016

Journal of Alloys and Compounds

113

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Section: Accepted Manuscriptmentioning

confidence: 99%

Dissimilar friction stir welding of 6061 Al to 316 stainless steel using Zn as a filler metal

Zheng

Feng

Shen

et al. 2016

Journal of Alloys and Compounds

113

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“…The thickness of the investigated plates ranged from 2 to 4 mm. Little research was reported on very thin plates, less than 2 mm thick [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…The maximum tensile strength of the HFSW joint reported was 93% of the AA base metal. Similarly, Liu et al [14] employed electrically assisted FSW for butt welding 1.4-mm-thick AA6061 to TRIP780 steel. Two electrodes were positioned close to the FSW tool, on the steel side.…”

Section: Introductionmentioning

confidence: 99%

FSW of aluminum AA5754 to steel DX54 with innovative overlap joint

et al. 2017

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An innovative overlap joint concept was tested to evaluate the quality improvement of welds between aluminum alloy AA5754-H22 (2 mm) and steel DX54 (1.5 mm). The innovation is a wave-shaped interface produced on the steel being directly processed by the tip of the probe, generating localized heat, extensive chemically active surfaces, and additional mechanical interlocking. Welds with different parameters were evaluated by metallographic analysis and mechanical tests. The best set of parameters was then implemented in a conventional overlap joint, plus in two-and three-passes welding, with the innovative overlap joint concept, to evaluate the effect on microstructure and mechanical efficiency. With a single-pass weld, the new concept presented lower strength in tensile shear tests, but higher strength in peeling tests. The main mechanism governing this behavior was the reduction of effective thickness in the aluminum alloy sheet, due to the flow of steel into the aluminum alloy. The characterization and distribution of the intermetallic compounds were evaluated via SEM-EDX. The two-passes weld resulted in the best strength values in tensile shear tests, reaching about 50% of the ultimate tensile strength of the aluminum alloy base material.

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“…Different studies have been carried out to modify the microstructure and various properties of the zone formed by FSW. FSW assisted by laser [22], ultrasonic vibration [23], and electrical current [24] are some of the modifications which increase the FSW tool life and refine the zone microstructure. In the current research, grain size in the zone is refined through friction stir vibration welding (FSVW).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Vibration during Friction Stir Welding on Corrosion Behavior, Mechanical Properties, and Machining Characteristics of Stir Zone

Fouladi

Ghasemi

Abbasi

et al. 2017

Metals

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Different methods have been applied to refine various characteristics of the zone (or nugget) obtained by friction stir welding (FSW). In the current research, joining components are vibrated normal to the weld line during FSW to refine the zone microstructure. This process is described as friction stir vibration welding (FSVW). The effect of FSVW on mechanical properties, corrosion behavior, and machining characteristics of the zone are investigated. Al5052 alloy specimens are welded using FSW and FSVW processes and their different characteristics are compared and discussed. The results show that the strength and ductility of the welded parts increase when the vibration is applied. The outcomes also show that corrosion resistance of the nugget for FSV-welded specimens is lower than FS welded samples, and machining force of the former specimens is higher than the latter ones. These are related to smaller grain size in the zone of FSV-welded specimens compared to FS welded parts. Smaller grain size leads to a greater volume fraction of grain boundaries and, correspondingly, higher strength and hardness, as well as lower corrosion resistance.

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Electrically assisted friction stir welding for joining Al 6061 to TRIP 780 steel

Cited by 114 publications

References 28 publications

Dissimilar friction stir welding of 6061 Al to 316 stainless steel using Zn as a filler metal

Dissimilar friction stir welding of 6061 Al to 316 stainless steel using Zn as a filler metal

FSW of aluminum AA5754 to steel DX54 with innovative overlap joint

The Effect of Vibration during Friction Stir Welding on Corrosion Behavior, Mechanical Properties, and Machining Characteristics of Stir Zone

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