Effect of input current modes on intermetallic layer and mechanical property of aluminum–steel lap joint obtained by gas metal arc welding

Su, Yongchao; Hua, Xueming; Wu, Yixiong

doi:10.1016/j.msea.2013.04.097

Cited by 79 publications

(42 citation statements)

References 23 publications

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“…5 and 6, firstly it is interesting to find that though the overall thickness of the inner and outside layers for each specimen is different, the thickness of the inner layer composed of Fe 2 Al 5 phase and the outside layer composed of FeAl 3 phase are in the same order of magnitude, which is in accordance with Ref. [25]. As explained in Ref.…”

Section: Effect Of Welding Parameters On the Thickness Of Fe-al Imcs supporting

confidence: 87%

“…Thus, the overall thickness of IMCs at brazing interface is controlled by the thickness of pre-formed Fe 2 Al 5 phase. Actually, according to Su et al [25], the thickness of IMCs at brazing interface is determined by reaction temperature and time during laser welding of aluminum and steel, and the higher reaction temperature and longer reaction time, the thicker thickness of IMCs at the brazing interface. To obtain the relationship between the thickness of Fe-Al IMCs at the brazing interface and the welding parameters, the microstructures at the brazing interface obtained under various welding parameters listed in Table 4 were compared and analyzed in Fig.…”

Section: Effect Of Welding Parameters On the Thickness Of Fe-al Imcs mentioning

confidence: 99%

See 1 more Smart Citation

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Qi²,

et al. 2015

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Section: Effect Of Welding Parameters On the Thickness Of Fe-al Imcs supporting

confidence: 87%

Section: Effect Of Welding Parameters On the Thickness Of Fe-al Imcs mentioning

confidence: 99%

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Qi²,

et al. 2015

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“…11b was considered as mainly Fe 2 Al 5 or FeAl 3 , although further investigation will be needed to elucidate the detailed characteristics of this IMC interlayer. Those layers were also observed with other welding methods such as friction stir spot welding [35], resistance spot welding [36,37], laser welding [38,39], and gas metal arc welding [40]. Hence, because those layers are brittle materials [41], the IMC interlayer will give fatal damage to equipments [11] if the joint will be used.…”

Section: Influence Of Friction Timementioning

confidence: 91%

Friction welding technique and joint properties of thin-walled pipe friction-welded joint between type 6063 aluminum alloy and AISI 304 austenitic stainless steel

Kimura

Kusaka

Kaizu

et al. 2015

Int J Adv Manuf Technol

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The joint characteristics of thin-walled pipe friction-welded joint between AA6063 aluminum alloy (A6063) and AISI 304 stainless steel (SUS304) were investigated. The pipe had a thickness of 1.5 mm, and the joint was made with a friction speed of 27.5 rps and a friction pressure of 30 MPa. The joint, which was made by a continuous drive friction welding machine, had heavy deformation on the A6063 side during braking. To prevent deformation until rotation stop with braking, the joint was made by a technique in which the relative speed between both specimens instantly decreased to 0 when the setting friction time was finished, and consequently, the joining could be successfully achieved. The joint with a friction pressure of 30 MPa and a friction time of 0.4 s did not have the intermetallic compound (IMC) layer (interlayer) at the weld interface, although that with a friction time of 1.6 s had it. However, the joint with a forge pressure of 150 MPa had the A6063 side buckling. Moreover, the joint efficiency of the joint with flash was higher than that of the joint without flash because the inner flash of A6063 was stuck to the inner surface of the SUS304 side. Therefore, the joint should be made with the opportune friction time without the IMC interlayer and with the opportune forge pressure without buckling, and the accurate joint efficiency should be evaluated without flash.

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“…However, the joining of aluminium to steel by GMA welding has remained difficult due to the formation of brittle Fe-Al intermetallic (IMC) phases along the joint interface that degrades the joint quality severely. [11][12][13][14][15][16][17][18] Experimental studies had indicated that the interfacial IMC layer thickness could be reduced by controlling the rate of heat input. 10,12,19,20 The purpose of the present study is to examine a controlled short circuiting GMA welding process that allows significant lowering of the heat input during arcing and metal transfer for the joining of an aluminium alloy and galvannealed steel.…”

Section: Introductionmentioning

confidence: 99%

Joining of galvannealed steel and aluminium alloy using controlled short circuiting gas metal arc welding process

Das¹,

Shome²,

Das³

et al. 2015

Science and Technology of Welding and Joining

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Controlling the Fe-Al intermetallic layer thickness along the joint interface has remained a critical challenge in gas metal arc welding of galvanised steel and aluminium alloys. An attempt is presented here to join galvannealed steel and aluminium alloy sheets using a novel gas metal arc welding process that allows controlled short circuiting to reduce the rate of heat input significantly. The real time current and voltage transients during the process are monitored to estimate the rate of heat input and its influence on the formation of intermetallic phases and layer thickness. The results show that the intermetallic layer thickness can be controlled and good joint strengths can be achieved when the rate of heat input remains lesser than 130 J mm 21 for the typical lap joint configuration considered here.

show abstract

Effect of input current modes on intermetallic layer and mechanical property of aluminum–steel lap joint obtained by gas metal arc welding

Cited by 79 publications

References 23 publications

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Friction welding technique and joint properties of thin-walled pipe friction-welded joint between type 6063 aluminum alloy and AISI 304 austenitic stainless steel

Joining of galvannealed steel and aluminium alloy using controlled short circuiting gas metal arc welding process

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