Effect of current wave-form on AC TIG welding of aluminium alloys

Miyasaka, Fumikazu; Okuda, Takehisa; Ohji, Tatsuki

doi:10.1533/wint.2005.3437

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…Miyasaka et al. [5] investigated the effect of current waveform on AC TIG welding of aluminium alloys and the results indicated that the penetration size was greatly affected by the supply of energy to the arc (the power consumption). Temmar et al.…”

Section: Introductionmentioning

confidence: 99%

“…Çetkin et al [4] reported the effect of welding parameters on microstructure and mechanical properties of AA7075/AA5182 alloys joined by TIG and MIG welding methods and the results showed the grain distributions and mechanisms differed depending on the welding methods, welding groove, and welding parameters. Miyasaka et al [5] investigated the effect of current waveform on AC TIG welding of aluminium alloys and the results indicated that the penetration size was greatly affected by the supply of energy to the arc (the power consumption). Temmar et al [6] studied the effect of post-weld ageing treatment on mechanical properties of TIG-welded low thickness 7075 aluminium alloy joints.…”

Section: Introductionmentioning

confidence: 99%

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Effect of welding wires on fatigue property of 7N01-T4 aluminium alloy joints

Liu

Wei

Long

et al. 2020

Science and Technology of Welding and Joining

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The effect of ER5356 and ER5087 welding wires on fatigue property of MIG-welded 7N01-T4 aluminium alloy joints was investigated. The microstructure of ER5087 welded joint is similar to that of ER5356 joint. However, the fusion zone of the welding joint with ER5087 has a smaller grain size than that of the joint with ER5356. The fatigue strength of joints welded with ER5356 and ER5087 is 105.9 and 103.2 MPa at 10 7 cycles. During the fatigue process, the crack initiation for joints welded using ER5087 is due to porosity while for ER5356 is due to microcracks from eutectic melting in the heat-affected zone.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of welding wires on fatigue property of 7N01-T4 aluminium alloy joints

Liu

Wei

Long

et al. 2020

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

show abstract

“…Tungsten Inert Gas (TIG) and Metal Inert Gas (MIG) were mostly used in joining the process of aluminium alloys [6][7][8][9][10], but MIG welding method was preferable since it is widely used for welding aluminium and it produces good weld appearance and quality [7]. Filler metal plays important role in fusion welding since the selection of filler metal type can affect the welded joint.…”

Section: Introductionmentioning

confidence: 99%

The mechanical and microstructural study of welded AA7075 using different filler metals

Ishak¹,

Salleh²,

Aisha³

2017

Int. J. CMEM

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This paper discussed about the consequences of using different filler metal by metal inert gas (MIG) welding process on aluminium alloys Al 7075 sheet metal joint. Nowadays, Al 7075 is widely used in automobile and aviation industry due to its light weight, strong, and high hardness. Fusion welding, such as MIG and TIG were commonly used in joining the aluminium alloys due to its low cost. However, defects usually occurred using fusion welding because of the inaccurate welding parameters and types of filler metal used. The purpose of this study is to determine whether the filler metal with different elements and welding parameters affect the mechanical properties of welded Al 7075. Welding parameters used were current, voltage, welding speed, and Argon (Ar) as shielding gas. Two different types of filler metal were used which is Electrode Rod (ER) 4043 and ER5356 which is from Al-Si and Al-Mg based element, respectively. From microstructure analysis, fusion zone (FZ) of sample welded with ER4043 has a smaller grain size than that of with ER5356. Both filler produced equiaxed dendritic grain at FZ. Both samples welded with ER4043 and ER5356 has lower hardness value than heat affected zone (HAZ) and base metal (BM) due to the differences in their elements where ER4043 from Al-Si and ER5356 from Al-Mg group. The weld efficiency of sample welded using ER5356 was 61% which was higher compared to sample welded using ER4043 which at 43% and both sample was brittle fractured. Sample welded with ER5356 was fractured at HAZ due to porosity while sample welded with ER4043 fractured at FZ due to the oxide inclusion.

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“…This is due to its characteristics of being lightweight, strong and very durable and it also has good machinability [5]. TIG and MIG were mostly used in the joining process of aluminium alloys [6][7][8][9][10], but MIG welding was preferable since it is widely used for welding aluminium and produces a good weld quality [7]. Filler metal plays an important role in fusion welding since the selection of filler metal type can affect the welded joint.…”

Section: Introductionmentioning

confidence: 99%

The effect of ER4043 and ER5356 filler metal on welded Al 7075 by metal inert gas welding

Salleh¹,

Ishak²,

Shah³

et al. 2016

WIT Transactions on the Built Environment

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Al 7075 is widely used in the automobile and aviation industry due to its light weight, strength, and good durability. Fusion welding such as metal inert gas (MIG) is commonly used in joining aluminium alloys. It was used because of its low cost and is generally used by welders. However, defects usually occurred using fusion welding because of improper welding parameters and the types of filler metal used. The purpose of the study is to investigate the effect of filler metal and welding parameters on the mechanical properties of welded Al 7075. The welding parameters used are current, voltage, welding speed, and Argon (Ar) as shielding gas. Two different types of filler metal, namely, Electrode Rod (ER) 4043 and ER5356 have been used. From microstructure analysis, the fusion zone (FZ) of a sample welded with ER4043 has a smaller grain size than that of one welded with ER5356. Both fillers produce equiaxed dendritic grain at FZ. Both samples welded with ER4043 and ER5356 have a lower hardness value than the heat affected zone (HAZ) and base metal (BM) due to the differences in their main elements where ER4043 is Al-Si and ER5356 is Al-Mg. The weld efficiency of a sample welded using ER5356 was 61% which was higher compared with a sample welded using ER4043, which is 43% and both samples were brittle fractured. The sample welded with ER5356 was fractured at HAZ due to porosity while the sample welded with ER4043 fractured at FZ due to the oxide inclusion at FZ.

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Effect of current wave-form on AC TIG welding of aluminium alloys

Cited by 5 publications

References 2 publications

Effect of welding wires on fatigue property of 7N01-T4 aluminium alloy joints

Effect of welding wires on fatigue property of 7N01-T4 aluminium alloy joints

The mechanical and microstructural study of welded AA7075 using different filler metals

The effect of ER4043 and ER5356 filler metal on welded Al 7075 by metal inert gas welding

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