Friction Welding of Semi-Solid Metal 7075 Aluminum Alloy

Meengam, Chaiyoot; Chainarong, Suppachai; Muangjunburee, Prapas

doi:10.1016/j.matpr.2017.01.151

Cited by 12 publications

(9 citation statements)

References 10 publications

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“…However, using fusion welding to repair aluminum alloy (AA) 7075 components is extremely challenging owing to the material's poor weldability, which is characterized by hot cracking and void formation during solidification and susceptibility to stress corrosion cracking after welding [4,5]. The high failure probability and unpredictable failure time from fusion welding have incited numerous studies on solid-state repair for AA 7075 [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Additive Friction Stir-Enabled Solid-State Additive Manufacturing for the Repair of 7075 Aluminum Alloy

et al. 2019

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The repair of high strength, high performance 7075 aluminum alloy is essential for a broad range of aerospace and defense applications. However, it is challenging to implement it using traditional fusion welding-based approaches, owing to hot cracking and void formation during solidification. Here, the use of an emerging solid-state additive manufacturing technology, additive friction stir deposition, is explored for the repair of volume damages such as through -holes and grooves in 7075 aluminum alloy. Three repair experiments have been conducted: double through-hole filling, single through-hole filling, and long, wide-groove filling. In all experiments, additive friction stir deposition proves to be effective at filling the entire volume. Additionally, sufficient mixing between the deposited material and the side wall of the feature is always observed in the upper portions of the repair. Poor mixing and inadequate repair quality have been observed in deeper portions of the filling in some scenarios. Based on these observations, the advantages and disadvantages of using additive friction stir deposition for repairing volume damages are discussed. High quality and highly flexible repairs are expected with systematic optimization work on process control and repair strategy development in the future.

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Section: Introductionmentioning

confidence: 99%

Additive Friction Stir-Enabled Solid-State Additive Manufacturing for the Repair of 7075 Aluminum Alloy

et al. 2019

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“…Various Researchers aimed at achieving maximum UTS for friction welded joint through parametric optimization of friction welding process. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] While doing parametric optimization following parameters are considered by researchers, Friction Time (FT), Friction Pressure (FP), Spindle Speed (SS), Burn of length (BOL) [1][2][3][4][5][6][7][8][9]. Further sub branching of friction welding parameters can be done in form of upset time, upset pressure, breaking time [1][2][3][4][5][6][7].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Mumin Sachin et al found Friction Time, Friction Pressure have direct effect on tensile strength of joint [5]. C. Meengam et al joined semi solidAA7077 using RFWprocess [2]. L.Zhou et al in their research work considered Rotational Speed as dominant parameter and studied its effect on mechanical properties, on microstructure of Ti-6Al-4V.…”

Section: Literature Reviewmentioning

confidence: 99%

Friction welding of Aluminium Alloy 6063 with copper

Chapke

Kamble

Shaikh³

2020

E3S Web Conf.

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Friction welding process is a forging welding process in which work piece are joined due to heat produced by friction between two joining surfaces and upset pressure is applied by non-rotating work piece. Joining of aluminum alloy with dissimilar material is important research area to focus on as maximum aircraft structures havexx Aluminum alloy frame and aerospace designers familiar with Aluminum alloy and its design considerations. After comparison of mechanical properties and application of light weight alloys aluminum alloys, tungsten, stainless steel and copper, copper selected as dissimilar material to join with Aluminum alloy AA6063. AA 6063 also known as architectural alloy selected based upon its properties. This dissimilar joint of AA6063 and Copper has application in electrical conductors as copper is good electrical conductivity and used in maximum electrical conductors. In this research work AA6063 joined with Copper successfully using Rotary Friction Welding process. Through process study effective process parameters like Friction Pressure, Upset Pressure, Spindle Speed, and Friction Time identified and their effect on weld joint strength were studied.Testing for measuring UTS of friction welded joint conducted. Using DOE tool optimized set process parameters for friction welding identified and their effect on weld joint strength studied experimentally. Maximum UTS of 222.787 MPa for Friction welded joint achieved, bend test also performed on friction welded samples.

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“…SSM 7075 aluminum alloy has good mechanical properties (corrosion resistance and light weight). It is used to produce the parts for aircrafts, automobiles and boats with the hardness of 99 HV and a tensile strength of 290 MPa, [16] and its chemical composition is shown in Table 1. Table 1.…”

Section: Semi-solid-metal 7075 Aluminum Alloymentioning

confidence: 99%

The Influence of Parameters Affecting Mechanical Properties and Microstructures of Semi-Solid-Metal 7075 Aluminum Alloy by Using Friction Stir Spot Welding

Sitthipong¹,

Towatana²,

Meengam³

et al. 2018

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This research aims to study the influence of parameters that affect the mechanical properties of semi-solid-metal 7075 aluminum alloy with friction stir spot welding process. The parameters for this experiment such as rotation welding speed at 380, 760, 1240 and 2500 rpm and welding time at 60, 90 and 120 seconds were employed respectively. The study found that the welded specimens at all the conditions can be welded very well. Moreover, friction stir spot welding process showed that the hardness in weld zone had an average value at 79.83 HV which is lower than the hardness of the base metal. The shear tensile strength of the welded specimens had the average value approximately 194.20 MPa at rotation welding speed of 2500 rpm, welding time of 90 seconds and plunge of depth of 2 millimetres. The microstructure in the weld zone and thermal mechanical affected zone were deformed permanently. Therefore, friction stir spot welding process of this aluminum alloy provided good effects on mechanical properties. Statistical analysis showed that the coefficient of determination R-square was equal to 93.50 percent. This means that the variations of the experiments were controllable, such as equipment or other factors in the experiment. For the remaining, only 6.50 percent was uncontrolled factors.

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Friction Welding of Semi-Solid Metal 7075 Aluminum Alloy

Cited by 12 publications

References 10 publications

Additive Friction Stir-Enabled Solid-State Additive Manufacturing for the Repair of 7075 Aluminum Alloy

Additive Friction Stir-Enabled Solid-State Additive Manufacturing for the Repair of 7075 Aluminum Alloy

Friction welding of Aluminium Alloy 6063 with copper

The Influence of Parameters Affecting Mechanical Properties and Microstructures of Semi-Solid-Metal 7075 Aluminum Alloy by Using Friction Stir Spot Welding

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