The effect of TIG welding techniques on microstructure, properties and porosity of the welded joint of 2219 aluminum alloy

Li, Hui; Zou, Jiasheng; Yao, Junshan; Peng, Haoping

doi:10.1016/j.jallcom.2017.08.157

Cited by 86 publications

(23 citation statements)

References 17 publications

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“…Aluminum alloys are well known and one of the most important materials in the world. It is found in wide range applications such as aerospace industries, railway vehicles, high-speed ships, most window panels, light structures, heavy structures, offshores structures, and bridges [1][2][3][4] . Aluminum alloys also have good corrosion resistance and strength to weight ratio [5][6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Investigation of Temperature History, Porosity and Fracture Mode on AA1100 Using the Controlled Intermittent Wire Feeder Method

Baskoro¹,

Amat²,

Putra³

et al. 2020

Evergreen

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In this study, the effect of variation of intermittent wire feeding method on thermal histories during the welding process, the physical appearance, mechanical properties, and fracture mode was investigated. The configuration parameter of wire feeding was determined by the properties of the so-called length ratio (RL). It was influenced by welding speed, wire feeding speed, feeding time, and delaying time. Bigger value of length ratio tends to have a smaller bead width with a higher cap. Also, a larger ratio tends to have bigger tensile strength and the fracture location close to the weld bead.

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Section: Introductionmentioning

confidence: 99%

Investigation of Temperature History, Porosity and Fracture Mode on AA1100 Using the Controlled Intermittent Wire Feeder Method

Baskoro¹,

Amat²,

Putra³

et al. 2020

Evergreen

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show abstract

“…Huang et al [17] investigated the porosity on aluminium alloys using spectral and X-ray image analysis. Li et al [18] studied the effect of welding parameters on microstructure and porosity.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Welding Parameter on Mechanical Properties and Macrostructure of AA1100 Using Autogenous Tig Welding

Baskoro¹,

Milyardi

Amat

2020

IJAME

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In this paper, an autogenous tungsten inert gas (TIG) welding was performed to understand the characteristic effect of butt joint weld on AA1100 under various parameters. The effect of TIG current and welding speed was selected to study the mechanical properties, porosity, and macrostructure of the weld metal (WM). Based on experimental results, the top bead width (TBW) will increase directly proportional to the increased of welding current. Furthermore, welding current and welding speed affected the strength drop in the heat-affected zone (HAZ). More heat added will result in a deeper drop in strength. Mechanical properties result showed that the tensile strength reduced by 40 – 45% and the hardness reduction in the WM and HAZ area from the base metal (BM) was 17.3% and 27.7%, respectively. Subsequently, X-Ray radiography images showed that there was no large porosity occur in all welding current. The macrostructure showed that the weld bead typically has the concavity shape or U-shaped geometry from a cross-sectional view.

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“…The transition ring of the rocket tank is the key component that connects the fuel tanks and bearing stress, and its material selection and forming process has always been a serious challenge [ 1 , 2 , 3 ]. Currently, the Al 2219 alloy has been widely used as the base material of the aforementioned part, because of its high strength, good weldability, and stable mechanical properties at −250–300 °C [ 4 , 5 , 6 , 7 , 8 ]. The forming of the transition ring mainly goes through technological processes such as casting, forging, and ring rolling, in which multi-pass characteristics are obviously observed, and its good performance is often improved through thermo-mechanical treatment (TMT) [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Static Softening Behavior and Modified Kinetics of Al 2219 Alloy Based on a Double-Pass Hot Compression Test

Liu

Gong

et al. 2020

Materials

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In this paper, the static softening mechanism of a 2219 aluminum alloy was studied based on a double-pass isothermal compression test. For the experiment, different temperatures (623 K, 723 K, and 773 K), strain rates (0.1/s, 1/s, and 10/s), deformation ratios (20%, 30%, and 40%), and insulation periods (5 s, 30 s, and 60 s) were used. Based on the double-pass flow stress curves obtained from the experiment, the step rate expressed by the equivalent dynamic recrystallization fraction is dependent on the deformation parameters, which increases with the increase in strain rate and insulation time, while it decreases with the increase in temperature and strain. Based on the microstructure observed using electron backscattered diffraction (EBSD), the static softening mechanism of the Al 2219 alloy is mainly static recovery and incomplete static recrystallization. A new expression for the static recrystallization fraction is proposed using the reduction rate of the sub-grain boundary. The dependent rule on the deformation parameters is consistent with the step rate, but it is of physical significance. In addition, the modified static recrystallization kinetics established by the new SRX fraction method was proven to have a good modeling and prediction performance under given deformation conditions.

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The effect of TIG welding techniques on microstructure, properties and porosity of the welded joint of 2219 aluminum alloy

Cited by 86 publications

References 17 publications

Investigation of Temperature History, Porosity and Fracture Mode on AA1100 Using the Controlled Intermittent Wire Feeder Method

Investigation of Temperature History, Porosity and Fracture Mode on AA1100 Using the Controlled Intermittent Wire Feeder Method

The Effect of Welding Parameter on Mechanical Properties and Macrostructure of AA1100 Using Autogenous Tig Welding

Static Softening Behavior and Modified Kinetics of Al 2219 Alloy Based on a Double-Pass Hot Compression Test

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