Microstructure, mechanical properties and formability of friction stir welded dissimilar materials of IF-steel and 6061 Al alloy

Aktarer, Semih Mahmut; Sekban, Dursun Murat; Küçükömeroğlu, Tevfik; Pürçek, G.

doi:10.1007/s12613-019-1783-z

Cited by 17 publications

(5 citation statements)

References 44 publications

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“…DRX requires a lot of stored energy in the material which is obtained in various ways including severe plastic deformation [39]. Therefore, the average grain size in TMAZ and HAZ zones is greater than that of the SZ [14].…”

Section: Microstructural Observationsmentioning

confidence: 99%

“…They also examined the formability of the FSWed sheets and a comparison of FLCs showed that formability of a welded sheet is reduced compared to that of the parent sheet. Aktarer et al [14] investigated the microstructure, mechanical properties and stretch formability of FSWed IF-steel along with 6061Al alloy. They concluded that the formability of the IF-steel decreases, while it increases in the case of the AA 6061 alloy.…”

Section: Introductionmentioning

confidence: 99%

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Formability study and metallurgical properties analysis of FSWed AA 6061 blank by the SPIF process

et al. 2021

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In this study, in order to obtain the maximum possible formability in tailor-welded blank AA6061 sheets connected by the friction stir welding (FSW) procedure, the incremental sheet forming process has been utilized. The results are presented both numerically and experimentally. To obtain the forming limit angle, the base and FSWed sheets were formed in different angles with conical geometry, and ultimately, the forming limit angle for the base metal and FSWed sheet is estimated to be 60° and 57.5°, respectively. To explore the effects of welding and forming procedures on AA6061 sheets, experimental studies such as mechanical properties, microstructure and fracture analysis are carried out on the samples. Also, the thickness distribution of the samples is studied to investigate the effect of the welding process on the thickness distribution. Then, the numerical process was simulated by the ABAQUS commercial software to study the causes of the FSWed samples failure through analyzing the thickness distribution parameter, and major and minor strains and the strain distribution. Causes of failure in FSWed samples include increased minor strain, strain distribution and thickness distribution in welded areas, especially in the proximity of the base metal area.

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Section: Microstructural Observationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formability study and metallurgical properties analysis of FSWed AA 6061 blank by the SPIF process

et al. 2021

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“…Since the material is kept in the solid state during welding, FSW overcomes the majority of problems caused by the conventional fusion welding of metals like Mg alloys [16][17][18], Al alloys [19][20][21][22], Ti alloys [23][24][25], steels [26][27][28], and Cu alloys [29][30][31]. FSW has also been used for dissimilar alloys, including Al/steel [32], Al/Copper [33,34], Al/Ti [35,36], Al/Mg [37,38], and Al/CFRP [39,40]. During the dissimilar joining by FSW, several mechanisms were acted simultaneously to achieve it.…”

Section: Introductionmentioning

confidence: 99%

“…During the FSW of Mg/Al, Al/Cu, and Al/Ti, an intermetallic compound (IMC) layer was formed by the chemical reaction during the welding, which promotes the joining force after welding [33, 35]. Meanwhile, the severe plastic deformation introduced by the FSW usually forms mechanical bounding even if there was no IMC layer [32]. As for the joining issue between Cu and Fe, the solute limit between them does not allow to form a reliable interface, which requires academic attention to build an effective joining method towards them.…”

Section: Introductionmentioning

confidence: 99%

The Cu/Fe magnetic yoke with novel interface and excellent mechanical properties by friction stir welding

Zhou

Chen

et al. 2022

Science and Technology of Welding and Joining

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A novel Fe/Cu interface with excellent mechanical properties in a magnetic yoke was fabricated by friction stir welding. This method eliminated defects that commonly form during conventional bead welding. The thick oxidisation layer at the Cu/Fe surface that formed due to fusion welding was eliminated during friction stir welding (FSW). Combined with the severe deformation introduced by FSW, the Cu/Fe interface obtained by fusion welding was hardly distinguishable due to mutual embedding at the Cu/Fe interface. The in situ digital image correlation analysis indicated that this Cu/Fe interface reconstruction also modified the deformation and crack propagation behaviours. The tensile load and displacement of the joint by FSW were remarkably improved while maintaining magnetic isolation.

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“…16 Aktarer et al studied the microstructure, mechanical properties, and biaxial tensile forming properties of friction stir welded part. 17 Some scholars have studied the body of FSW robot. De Backer et al studied the path compensation method of FSW robot.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance research of friction stir welding robot for aerospace applications

Luo

Zhao

Guo

et al. 2021

International Journal of Advanced Robotic Systems

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The friction stir welding robot for aerospace applications developed by the research group is subject to the effects of size, working conditions, and other conditions during the operation. The load conditions of the friction stir welding robot are harsh, and the strength and stiffness tests of the whole machine need to be carried out. Five typical working conditions of the friction stir welding robot are analyzed. By analyzing the system composition and configuration of the robot, the loading conditions of the robot stirring head during the welding process are accurately simulated, and this is used as the stiffness and strength check. The boundary conditions of the robot are simulated and analyzed under typical working conditions. The results show that the data of each part of the robot under load are obtained for a given size of the rocket cap welding. After analysis, the maximum normal displacement of the friction stir welding robot reached 0.6424 mm and the maximum stress was 79.21 MPa under the condition of melon flap welding.

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Microstructure, mechanical properties and formability of friction stir welded dissimilar materials of IF-steel and 6061 Al alloy

Cited by 17 publications

References 44 publications

Formability study and metallurgical properties analysis of FSWed AA 6061 blank by the SPIF process

Formability study and metallurgical properties analysis of FSWed AA 6061 blank by the SPIF process

The Cu/Fe magnetic yoke with novel interface and excellent mechanical properties by friction stir welding

Mechanical performance research of friction stir welding robot for aerospace applications

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