Microstructure and mechanical properties of AA7075/AA5182 jointed by FSW

Çetkin, Edip; Çelik, Yahya Hışman; Temiz, Şemsettın

doi:10.1016/j.jmatprotec.2019.01.005

Cited by 37 publications

(22 citation statements)

References 13 publications

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“…Due to the advantages over traditional fusion joining techniques, such as the lack of melting, low defect and low distortion, FSW has been widely applied in the aerospace, automobile and railway industries [2,3]. It uses the high-speed rotating tool to generate heat by friction on the workpiece to promote the plastic flow of the material and realize weld formation under the forging action of the shoulder [4,5]. The traditional fusion welding process is prone to defects such as welding hot cracks, inclusions, porosity, alloy element burning, and welding residual deformation, which will significantly reduce the welding quality.…”

Section: Introductionmentioning

confidence: 99%

Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy

et al. 2019

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Aiming at the problems that the temperature in the welding area of friction stir welding (FSW) is difficult to measure and the joints are prone to defects. Hence, it is particularly important to study the material flow in the welding area and improve the welding quality. The temperature of the tool shoulder and the tool pin was monitored by the wireless temperature measuring system. The finite element model of friction stir welding was established and the welding conditions were numerically simulated. The flow law of material of the friction stir welding process was studied by numerical simulation. The material flow model was established by combining the microstructure analysis results, and the forming mechanism of the defects was analyzed. The results show that the temperature in the welding zone is the highest at 1300 rpm, and the temperature at the tool shoulder is significantly higher than that at the tool pin in the welding stage. When high-rotation speeds (HRS) are chosen, the material beneath the tool shoulder tends to be extruded into the pin stirred zone (PSZ) after flowing back to the advancing side. This will cause turbulence phenomenon in the advancing side of the joint, which will easily lead to the formation of welding defects. In the future, temperature monitoring methods and the flow model of material can be used to optimize the welding parameters.

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Section: Introductionmentioning

confidence: 99%

Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy

et al. 2019

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“…Among these light alloys, aluminium alloy is the most common one. Almost all the aluminium alloys can be joined using FSW 1–4 . FSW brings finer grain and uniformly distributed precipitates or reinforcements in stir zone (SZ) 5–9 .…”

Section: Introductionmentioning

confidence: 99%

“…Almost all the aluminium alloys can be joined using FSW. [1][2][3][4] FSW brings finer grain and uniformly distributed precipitates or reinforcements in stir zone (SZ). [5][6][7][8][9] It generally shows a better mechanical property compared with that of base metal (BM).…”

Section: Introductionmentioning

confidence: 99%

Effect of rolling process on fatigue performance of stir zone of AA6061‐T6 doube‐side friction stir welding joint

Pan

Chen

et al. 2020

Fatigue Fract Eng Mat Struct

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Stir zone (SZ) of AA6061‐T6 double‐side friction stir welding (DS‐FSW) joint with a thickness of 6 mm had a poor fatigue performance compared with that of base metal (BM). The rolling process was employed to improve the fatigue performance of SZ. The results showed that rolling process increased the dislocation density in SZ and remarkably enhanced its fatigue performance. The crack initiation played a key role in the fatigue performance of SZ. It relied on the debonding of lamellar structure in SZ. The debonding of lamellar structure depended on the cracking of fine grain layer in lamellar structure.

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“…Among these light alloys, aluminum alloy is the most common one. Almost all the aluminum alloys can be joined using FSW [1][2][3][4] . Poor fatigue performance is one of the symbols of aluminum friction stir welding (FSW) joint.…”

Section: Introductionmentioning

confidence: 99%

Effect of rolling process on fatigue performance of stir zone of AA6061 DS-FSW joint

Du¹,

Pan²,

Chen³

et al. 2020

Preprint

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Stir zone (SZ) of AA6061-T6 double-side friction stir welding (DS-FSW) joint with a thickness of 6 mm had a poor fatigue performance compared with that of base metal (BM). The rolling process was employed to improve the fatigue performance of SZ. The results showed that rolling process increased the dislocation density in SZ and remarkably enhanced its fatigue performance. The crack initiation played a key role in the fatigue performance of SZ. It relied on the debonding of lamellar structure in SZ. The debonding of lamellar structure depended on the cracking of fine grain layer in lamellar structure.

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Microstructure and mechanical properties of AA7075/AA5182 jointed by FSW

Cited by 37 publications

References 13 publications

Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy

Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy

Effect of rolling process on fatigue performance of stir zone of AA6061‐T6 doube‐side friction stir welding joint

Effect of rolling process on fatigue performance of stir zone of AA6061 DS-FSW joint

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