Effects of welding speed on the microstructure and hardness in friction stir welding joints of 6005A-T6 aluminum alloy

Dong, Peng; Li, Hongmei; Sun, Dongbai; Gong, Wenbiao; Liu, Jie

doi:10.1016/j.matdes.2012.09.040

Cited by 102 publications

(45 citation statements)

References 28 publications

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“…As already confirmed by numerous researchers for many alloys, FSW results in generation of various microstructural zones, i.e., the nugget zone (NZ), the thermomechanically affected zone (TMAZ) and the heat-affected zone (HAZ) [3][4][5][6][7][8][9][10][11][12][13]. These zones exhibit different microstructural characteristics such as grain size [6][7][8], texture [9] and precipitate state [10][11][12][13].…”

Section: Introductionmentioning

confidence: 88%

Microstructure, microhardness and corrosion susceptibility of friction stir welded AlMgSiCu alloy

Dong

Sun

Wang

et al. 2014

Materials & Design (1980-2015)

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Section: Introductionmentioning

confidence: 88%

Microstructure, microhardness and corrosion susceptibility of friction stir welded AlMgSiCu alloy

Dong

Sun

Wang

et al. 2014

Materials & Design (1980-2015)

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“…Fig. 14 shows a similar histogram and lognormal distribution for 60xx Al [114][115][116][117][118][119]8,29,28,120,121,34,9,41,50,102,122,123,44,124,46,17,125,126,48,127,112] with l = 78.7 andr = 15.5.…”

Section: Input Data For Probabilistic Analysismentioning

confidence: 72%

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Miranda

Gerlich

Walbridge

2015

Engineering Fracture Mechanics

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“…The fusion zone line appears clearly between the NZ and the TMAZ as in Figs. 17(b) and (c) [14]. The coarse grain size with higher dislocation was found in the TMAZ.…”

Section: Resultsmentioning

confidence: 88%

“…The coarse grain size with higher dislocation was found in the TMAZ. The third region HAZ is followed directly by the TMAZ, in which, only thermal cycle without deformation or melting was occurred [14]. As a result, the microstructure was changed and fine grain size was found as shown in Figs.…”

Section: Resultsmentioning

confidence: 99%

Thermal Finite Element Analysis and Optimization of Carbon Steel Stud Arc Weld

Hussein¹

2017

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Abstract. In this work an investigation to the temperature distribution during the stud arc welding process by building a thermal finite element (FE) model with the aid of Comsol-program was conducted. Also, an optimization to the ultimate applied torque of the welded stud and the total input heat during welding process by individual and composite desirability was intended. A stud of carbon steel-B7 is welded to a plate of carbon steel-grade-C. The welding machine parameters are; current, welding time and plunge. Three levels for each parameter, mentioned above, are used to optimize the resistance torque and the total heat flux using the design of experiments according to Taguchi method. The finite element model is built upon the input heat source, convection and radiation heat transfer during stud welding process. The tests include the torsional test and actual heat transfer depending on the record of temperatures at different locations. The suggested FE model gave good agreement with the experimental temperature record with an approximate error of 5%. The results indicated that the torsional resistance increases with the increasing of weld time at small welding current of 400 A. At higher welding current (I= 800 A) the torsional resistance decreases with the increasing of the plunge welding value. The maximum temperature region lies at the center of the FE welded model and reduced gradually away from it with a symmetrical distribution. A sufficient welding heat input can make the torsional resistance of the weld line more than those of the stud. Due to the higher temperature gradient during the welding process, the microstructure of the welded joint exhibits three regions; nugget zone (NZ), thermo-mechanical affected zone (TMAZ) and the heat affected zone (HAZ). The first region consists of Martensite and ferrite phase with a higher plastic deformation, in which, the peak value of temperature was observed numerically. A coarse grain size with higher dislocations was found in the second stage. While, the HAZ gave a fine grain size without deformation due to mild thermal cycle is occurred in this region.

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Effects of welding speed on the microstructure and hardness in friction stir welding joints of 6005A-T6 aluminum alloy

Cited by 102 publications

References 28 publications

Microstructure, microhardness and corrosion susceptibility of friction stir welded AlMgSiCu alloy

Microstructure, microhardness and corrosion susceptibility of friction stir welded AlMgSiCu alloy

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Thermal Finite Element Analysis and Optimization of Carbon Steel Stud Arc Weld

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