Investigation of Mechanical Properties of Friction Stir Welded pure Copper Plates

Nagabharam, P.; Rao, D. Srikanth; Kumar, J. Manoj; Gopikrishna, N.

doi:10.1016/j.matpr.2017.11.210

Cited by 15 publications

(2 citation statements)

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“…Although the process of FSW was successfully employed for joining a wide variety of similar and dissimilar alloys of aluminium, only very few researchers [32][33][34][35] have made investigational attempts to join alloys of Cu by employing the FSW process. For example, an effort was put forward by Nagabharam et al [32] to understand the impact of some parameters of FSW namely, the geometry of tool pin, speed of traversing, and speed of spinning. In this experimental effort, tools with 2 distinctive geometry of pin (namely straight square and straight cylindrical) were employed at 2 distinctive traversing and spinning speeds.…”

Section: Introductionmentioning

confidence: 99%

Impact of speed of traverse during joining of CDA101 plates by FSW process

Kumar¹,

Sevvel²

2022

Scientia Iranica

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An experimental investigation was carried out to comprehend the impact of speed of traverse of tool on tensile strength and micro-structural peculiarities of attained joints during friction stir welding of Cu alloy namely CDA 101 flat plates, with other parameters namely spinning speed of tool (1100 rpm) and downward force (6kN) being constant. A tool with cylindrical tapered pin geometry was made to traverse at distinctive speeds from 20 mm/min to 45 mm/min. It was observed that, the CDA 101 joints fabricated at 20 mm/min was found to be entirely free flaws, with joints fabricated at other speeds of tool traverse possessing several weld flaws. Grains in the center of the zone of stir of the joints obtained at 20 mm/min was uniformly distributed and homogeneous, due to the experience of the exemplary volume of frictional heat and sufficient amount of stirring force. Highest tensile strength of 200.65 MPa (nearly 85.38% of base metal)was exhibited by joint attained at 20 mm/min.

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Section: Introductionmentioning

confidence: 99%

Impact of speed of traverse during joining of CDA101 plates by FSW process

Kumar¹,

Sevvel²

2022

Scientia Iranica

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“…3,4) Friction stir welding can also be performed in air, but the temperature of the joint will be high, resulting in significant deformation. 5,6) In addition, any aforementioned joining method requires a tool to be pressed against the joint to apply pressure and is not suitable for joining narrow gaps where the tool cannot access. Therefore, the authors have reported similar copper bonding using electrical plating technology that can be performed at low temperature without bonding pressure.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Bonding of Copper by Copper Electrodeposition

et al. 2022

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Bonding copper in the solid state requires either a high temperature, large deformation, or high vacuum. In the present study, copper was butt-bonded using a K-shaped groove at 298 K under no bonding pressure through copper electrodeposition. The initial gap between the faying surfaces of the copper rods were gradually filled with the electrodeposition of copper from the center to the periphery. No significant defects were observed in the bond layer, and a high joint strength of approximately 240 MPa was obtained. There were three regions in the bond layer: fine columnar grain region, ultrafine grain region, and recrystallized grain region. The size of the ultrafine grains was several tens of nanometers, and the microhardness was larger than that of the base metal. As electrodeposition progressed, there were insufficient additives for electrodeposition near the center of the bond layer, and recrystallization occurred owing to self-annealing.

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