Fabrication of in situ Cu/SiC composites using multi-pass friction stir processing: Evaluation of microstructural, porosity, mechanical and electrical behavior

Barmouz, Mohsen; Givi, Mohammad Kazem Besharati

doi:10.1016/j.compositesa.2011.06.010

Cited by 176 publications

(59 citation statements)

References 35 publications

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“…Higher mechanical stresses and heat generation in the 2-pass FSPed specimen provides a severe material flow in the processed zone which surely distributes the different phases more efficient than 1-pass. As reported in our previous works, this phenomenon also could break down the SiC particles as a result of shear stresses 12 . Figure 4 exhibits the SEM image of the 3-pass FSPed specimen.…”

Section: Methodsmentioning

confidence: 76%

Mechanical and Microstructural Characterization of Hybrid Cu-SiC-Zn Composites Fabricated Via Friction Stir Processing

2016

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In this work, an attempt has been made to fabricate hybrid Cu-SiC-Zn composites by friction stir processing technique. Through this investigation the different number of passes was applied to assess the effect of pass adding on the mechanical, microstructural and dislocation density behavior of the specimens. Formation of the intermetallic phases between the copper matrix and Zn particles was discovered through the processed specimens. According to the obtained results, the higher passes led to obtain more uniform dispersion of the SiC particles and intermetallic phases. This higher level of particles and intermetallic phases' distribution causes remarkable reduction of grain sizes through the composites. Dislocation density for the processed specimens was determined by using the hardness measurement method. The calculated values for the dislocation densities showed that presence of SiC particles and intermetallic phases could rise up the dislocation values. Measured microhardness values for the composites exhibit that they enhanced rather than base metal and these results were confirmed by dislocation densities values of the specimens.

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Section: Methodsmentioning

confidence: 76%

Mechanical and Microstructural Characterization of Hybrid Cu-SiC-Zn Composites Fabricated Via Friction Stir Processing

2016

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“…multi-pass with even step (2, 4 up to 8-pass) FSP with 100% overlap was performed by [ 24 ] The results reported that multi-pass FSP were improved tensile properties of composites including UTS, yield strength (YS) and elongation. The authors were reasoned this improvement because of reduced .…”

Section: Introduction:-mentioning

confidence: 99%

Effect of Friction Stir Processing Parameters on the Tensile Strength of Surface Composite Aluminum Alloy.

Moustafa¹,

Mohammed²,

Abdel-Wanis³

et al. 2017

IJAR

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In the current study, the surface composite sheet of AA2024/al203 has been fabricated using friction stir processing technique. The processing parameters during fabrication process; such as rotation speed, travel speed and number of passes have been investigated. The number of passes has a significant effect on the mechanical properties through tensile test. The results revealed that tensile strength improved with increasing passes number.Copy Right, IJAR, 2016,. All rights reserved. …………………………………………………………………………………………………….... Introduction:-Increasing demand for improving the properties of surfaces in order to meet with design and functional requirements. Friction stir processing (FSP) is one of the techniques for fabricating surface composites and modifying microstructural features, furthermore the improvement of mechanical properties. Process parameters are the key art of Friction Stir Processing. The stirring conditions (rotational and translational speeds) are important issues in FSP to obtain the desired mechanical properties.Many researchers were discussed the relation between the process parameters and the quality of welded or processed metals according to [ 1,2,3,4 ]. The Tensile strength is found to be increased with increasing the rotational speed up to specified limit for AA6351 Al alloys as reported by [ 5 ].The tensile properties and fracture locations have been investigated by many authors [ 6,7,8 ] they are fabricated metal sheets alloy using FSP. The results are revealed that the rotational speed has a significant influence on the tensile strength as a result of improving grain refinement of the material. The mechanisms of particle refinement during FSP of pure Al, and the effect of various processing parameters on the particle refinement have been studied by [ 9 ]. The investigators reported, that amount of heat generation during FSP was increased when rotational speed increase and decrease when transverse speed increase. Fabricating AA1050/SiC surface composite using FSP technique has been investigated by [ 10 ] the author concluded that , the formation of defects are causing at higher tool rotational speeds. The surface composite sheets are investigated by [ 11,12,13,14,15,16 ], they are concluded that tool rotation speed has a major effect on the mechanical properties and microstructure refinement.The effect of multi-pass FSP on the, microstructure, micro hardness and tensile strength on the metal alloy and composites have been studied by [ 17,18,19,20,21,22 ].Multi pass FSP not only improve the mechanical properties , but also get defect-free weld through adjusting the Welding parameters, including tool rotation rate, traverse speed, spindle tilt angle, and target depth [ 23 ] . multi-pass with even step (2, 4 up to 8-pass) FSP with 100% overlap was performed by [ 24 ] The results reported that multi-pass FSP were improved tensile properties of composites including UTS, yield strength (YS) and elongation. The authors were reasoned this improvement because of reduced

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“…The impact of particle distribution during number of pass was investigated by various researchers. It was found that the particle distribution was improved by the increasing the passes and the process parameters [6][7][8][9][10]. Jafari et al [11] studied the outcome of CNT on 6mm Cu plates fabricated by friction stir processing by taking the groove size 0.3mm depth and 1.5mm width, and found that there is an enhancement of mechanical properties of the welded joint.…”

Section: Introductionmentioning

confidence: 99%

Effect of Welding Speed on Microstructure and Mechanical Properties due to The Deposition of Reinforcements on Friction Stir Welded Dissimilar Aluminium Alloys

Baridula

Faizal

Ramaraju³

et al. 2017

MATEC Web Conf.

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The strength of the welded joint obtained by solid state stir welding process was found to be improved as compared to fusion welding process. The deposition of reinforcements during friction stir welding process can further enhance the strength of the welded joint by locking the movement of grain boundaries. In the present study, the aluminium alloys AA2024 and AA7075 were welded effectively by depositing the multi-walled carbon nanotubes in to the stir zone. The mechanical properties and microstructures were studied by varying the traverse speed at constant rotational speed. The results show that rotating tool pin stirring action and heat input play an important role in controlling the grain size. The carbon nanotubes were found to be distributed uniformly at a welding speed (traverse speed) of 80mm/min. This enhanced the mechanical properties of the welded joint. The microstructure and Electron dispersive X-ray analysis (EDX) studies indicate that the deposition of carbon nanotubes in the stir zone was influenced by the traverse speed.

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Fabrication of in situ Cu/SiC composites using multi-pass friction stir processing: Evaluation of microstructural, porosity, mechanical and electrical behavior

Cited by 176 publications

References 35 publications

Mechanical and Microstructural Characterization of Hybrid Cu-SiC-Zn Composites Fabricated Via Friction Stir Processing

Mechanical and Microstructural Characterization of Hybrid Cu-SiC-Zn Composites Fabricated Via Friction Stir Processing

Effect of Friction Stir Processing Parameters on the Tensile Strength of Surface Composite Aluminum Alloy.

Effect of Welding Speed on Microstructure and Mechanical Properties due to The Deposition of Reinforcements on Friction Stir Welded Dissimilar Aluminium Alloys

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