A novel approach to develop aluminum matrix nano-composite employing friction stir welding technique

Bahrami, Mohsen; Dehghani, K.; Givi, Mohammad Kazem Besharati

doi:10.1016/j.matdes.2013.07.006

Cited by 157 publications

(103 citation statements)

References 27 publications

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“…Although the mechanisms of this abnormal behavior are not yet clear, the results are in agreement the works of Bahrami et al [22] and Pantelis et al [23] in which higher UTS and elongation were observed in friction stir welds reinforced with SiC nanoparticles compared to these without nanoparticles. The similarity between the present work and the works of Bahrami et al [22] and Pantelis et al [23] is the heterogeneity of weld nugget.…”

Section: Mechanical Behaviorsupporting

confidence: 91%

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Daniolos

Pantelis

2016

Int J Adv Manuf Technol

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In the present work, similar and dissimilar friction stir welds have been produced on 6-mm-thick plates of AA6082-T6 and AA7075-T651. The microstructural characteristics and the mechanical response of both similar and dissimilar welds were investigated aiming to determine the major differences between them. Material mixing of the dissimilar weld nugget, which was created after the welding process, was studied in order to determine the produced different areas and their dominant alloying elements in this zone. Microstructural investigation was made in the welding zones of similar and dissimilar friction stir welds and indications of partial dynamic recrystallization were observed in the thermomechanically affected zone of the similar welds. Transverse and longitudinal microhardness distributions determined the heat affected zone as the weaker area in the welded specimen. After tensile testing, the fracture of the similar and the dissimilar welds at heat affected zone demonstrated the good bonding and weld quality of the similar and dissimilar weld nuggets.

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Section: Mechanical Behaviorsupporting

confidence: 91%

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Daniolos

Pantelis

2016

Int J Adv Manuf Technol

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“…They noted that after the FSW of copper, the failure occurred in the area having severely agglomerated SiC particles. Bahrami et al [6] also reported the similar results in the FSW of AA7075 alloy containing nano-powders. Referring to Fig.…”

Section: Tensile Testsupporting

confidence: 54%

“…Contrary to the fusion welding processes, there is no melt during FSW. Consequently, this process overcomes the shortcomings of conventional fusion welding [6].…”

Section: Introductionmentioning

confidence: 99%

“…That is because there are many shortcomings during the fusion welding of aluminum alloys, e.g., gas and shrinkage porosities, solidification cracks, slag inclusions, etc. Thus, the conventional welding techniques are not suitable for joining the aluminum alloys [5,6]. On the other hand, the most promising method for welding of aluminum alloys is friction stir welding (FSW), which was developed as a solidstate welding technology [7].…”

Section: Introductionmentioning

confidence: 99%

“…It was shown that SiC particles were aggregated in the first pass but their distribution became more uniform after employing the second pass. Bahrami et al [6] used SiC nano-particles during the FSW of AA7075-O sheets. They reported that adding the nanoparticles in stir zone led to enhancement of mechanical properties of joints.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Friction stir welding of AA5052: the effects of SiC nano-particles addition

Bodaghi

Dehghani

2016

Int J Adv Manuf Technol

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In the present work, the AA5052 aluminum sheets were joined by friction stir welding (FSW) technique. In order to refine the microstructure of stir zone (SZ) and to prevent the grain growth of heat-affected zone (HAZ), the SiC nanoparticles were added to the weld nugget. To obtain the optimum condition for FSW, three rotational speeds (800, 1000, and 1250 rpm) and three traveling speeds (30, 50, and 80 mm/ min) were applied. Microstructural evolutions were characterized using optical and scanning electron microscopes. Besides, the mechanical properties (tensile strength, hardness, and wear test) of weldment were also studied. The results showed that adding the SiC nano-particles led to the significant grain refining of the welds. However, the improper SiC powder distribution during one pass of FSW resulted in the premature fracture of workpiece. The specimens joined at the rotational speed of 1000 rpm and welding speeds of 50 and 80 mm/min exhibited the highest ultimate tensile strength.

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Comparative Analysis of Microstructural and Mechanical Characteristics of Reinforced FSW Welds

Singh

2024

Friction Stir Welding and Processing

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A novel approach to develop aluminum matrix nano-composite employing friction stir welding technique

Cited by 157 publications

References 27 publications

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Microstructural and mechanical properties of dissimilar friction stir welds between AA6082-T6 and AA7075-T651

Friction stir welding of AA5052: the effects of SiC nano-particles addition

Comparative Analysis of Microstructural and Mechanical Characteristics of Reinforced FSW Welds

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