Introduction to the welding of aluminium

Mathers, Gene

doi:10.1533/9781855737631.1

Cited by 23 publications

(10 citation statements)

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“…This indicates that for the same set of parameters, the difference in % EP does not affect the mechanical properties. Al -5556, a magnesium based alloy, obtains its strength by solid solution strengthening and varies in mechanical properties when there is a change in the chemical composition [6]. During welding, magnesium easily evaporates at high temperature due to their low melting point and vapour pressure in comparison to aluminium [22].…”

Section: Mechanical Testmentioning

confidence: 99%

“…Aluminium is a material of great interest due to its low weight to strength ratio [6]. However, the oxide film (Al2O3) has a high fusion temperature.…”

Section: Introductionmentioning

confidence: 99%

“…This forms on the surface of aluminium which makes it challenging during application of welding processes. Therefore, the oxide film needs to be removed to ensure good fusion and low porosity [6][7][8]. Current studies have found that using CMT pulse advance process for aluminium WAAM can be beneficial [7,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…In aluminium welding, the alternating current TIG (ACTIG) process has been used because of its ability to allow setting of the proportions of electrode positive (% EP) to negative (% EN) time cycle to enhance oxide removal and fusion effect [8,12,13]. This is possible because the % EP part of the AC cycle can effectively remove aluminium oxides through the mechanism known as the cleaning effect [6,14]. The mechanism involves the generation of anions from the arc plasma which are directed towards the aluminium base metal (cathode).…”

Section: Introductionmentioning

confidence: 99%

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Assessing the effect of TIG alternating current time cycle on aluminium wire + arc additive manufacture

Ayarkwa

Williams

Ding

2017

Additive Manufacturing

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The effect of electrode positive time cycle (% EP) of the alternating current TIG process has been investigated for aluminium wire + arc additive manufacture of linear walls. The study considered the effect on oxide removal, linear wall dimensions, microstructure, mechanical properties as well as the effect on electrode wear. The results showed that the effective wall width was minimum at 20 %EP with a corresponding maximum in layer height. It was also observed that increasing the % EP increased the electrode wear rate, which in turn affected the arc stability. Microstructure analysis showed a noticeable increase in the grain size for higher % EP. The study also showed that % EP had no significant effect on mechanical properties. From a heat input analysis, a direct correlation was observed between the arc voltage and the % EP. The study also indicated that there could be other contributing factors to wall dimensions. For aluminium wire + arc additive manufacture of linear walls, minimum cleaning ranged between 10 %EP and 20 %EP.

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Section: Mechanical Testmentioning

confidence: 99%

“…Aluminium is a material of great interest due to its low weight to strength ratio [6]. However, the oxide film (Al2O3) has a high fusion temperature.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessing the effect of TIG alternating current time cycle on aluminium wire + arc additive manufacture

Ayarkwa

Williams

Ding

2017

Additive Manufacturing

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“…The main alloying element of this alloy, i.e., zinc, has the highest solid solubility in aluminum and generally improves precipitation hardening properties [ 1 ]. Additionally, 5xxx series alloys are used in cladding, vessels, tanks, vehicles, vessel hulls, and superstructures [ 2 ]. Magnesium is the primary alloying element in 5xxx alloys, which are strengthened by strain hardening.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Rotary Friction Welded AA7075 and AA5083 Dissimilar Joint

et al. 2023

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The present work aims to investigate the changes in the microstructural and mechanical properties of various pre- and post weld heat treatments (PWHTs) on rotary friction welded dissimilar (AA7075 and AA5083) aluminum alloys. The investigation focused on the evolution of weld macro- and microstructures, as well as the changes in hardness and tensile properties resulting from friction welding. The joint integrity was studied through various characterization techniques, and no cracks or incomplete bonding was observed. The study found that the dissimilar joints of the AA7075 and AA5083 alloys displayed higher flash formation on the AA7075 side, which has a lower melting temperature compared to the AA5083 alloy. Various zones were identified in the weld region, including the dynamic recrystallized zone (DRZ), the thermomechanically affected zone (TMAZ) consisting of TMAZ-1 (elongated grains) and TMAZ-2 (compressed/distorted grains), the heat-affected zone (HAZ), and the base metal (BM) zone. The rotary friction welded sample AA5083/AA7075-PWHT joint exhibited the highest strength (yield strength (YS): 195 ± 3 MPa, ultimate tensile strength (UTS): 387 ± 2 MPa) among all the other welded conditions, and this may be attributed to the major strengthening precipitates MgZn2 (of AA7075) formed during postweld aging. All dissimilar welds failed in the HAZ region of the AA5083 side due to the formation of coarse grains, indicating the weakest region.

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Optimization of Process Parameters for Friction Stir Welding of Aluminium Alloy AA5052-H32 by Using Taguchi Method

Arya

Jain

Jayaprakash

2022

Springer Proceedings in Materials

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Introduction to the welding of aluminium

Cited by 23 publications

References 0 publications

Assessing the effect of TIG alternating current time cycle on aluminium wire + arc additive manufacture

Assessing the effect of TIG alternating current time cycle on aluminium wire + arc additive manufacture

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Rotary Friction Welded AA7075 and AA5083 Dissimilar Joint

Optimization of Process Parameters for Friction Stir Welding of Aluminium Alloy AA5052-H32 by Using Taguchi Method

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