Effect of process parameters on tensile strength of friction stir welded cast A356 aluminium alloy joints

Jayaraman, M.; Balasubramanian, V.

doi:10.1016/s1003-6326(13)62506-6

Cited by 33 publications

(20 citation statements)

References 21 publications

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“…FSP also results in the closure of casting porosity and a homogenized microstructure. This could convert the ascast material into a near-wrought condition, this homogenized and refined microstructure along with the closure of porosity results in improved mechanical properties [1,12]. Porosity has been significantly decreased from 94 µm ECD, in the as cast condition to as low as 7.1 µm ECD after FSP: Fig.…”

Section: Resultsmentioning

confidence: 94%

“…FSP stir zones are prone to defects like cavity, tunnel, pin hole etc. due to excess or in sufficient heat input in the stir region [1]. The macrographs of the traverse cross section of hypereutectic LM28 alloy FS-processed samples for four different of rotational speeds, and a traverse speed are displayed in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…Aluminium-silicon (Al-Si) cast alloys are used widely because of the many advantages they offer such as good castability, high strength, good weldability, wear and corrosion resistance [1]. Application of these alloys includes automotive engine blocks, cylinders heads, gear boxes, crank case and break cylinder [2].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Abdulmalik

Ahmad²

2018

IJIE

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This paper reports an investigation of the influence of friction stir processing (FSP) on the microstructure modification, tensile properties and hardness of as cast hypereutectic LM28 aluminium silicon (Al-Si) alloy, aimed to decrease Silicon particles size, porosity, and enhancing tensile properties. Intense plastic deformation foisted by FSP resulted in a remarkable breaking up of the coarse eutectic and primary silicon particles into smaller ones, and closure of porosity. The area sizes of the fragmented Si particles decreased from 155.1 μm² to around 49.4 μm², aspect ratio of about 2.86 in the as cast condition decreased to around 1.63 after FSP. Porosity was also drastically reduced from 94 µm ECD, in the as cast condition to as low as 7.1 µm ECD. The strength and ductility of the alloy increased simultaneously after FSP. The increase in the tensile strength and ductility values after FSP, as compare to the as cast alloy was around 1.56, and 4.38 times respectively. The LM28 FS-processed alloy displayed an increase in quality index of around 1.97 times higher, than that of the as-cast alloy. The hardness of the alloy increased from 64.6 HV for the as-cast alloy to about 85.74 HV after FSP. Enhancement in all the properties was largely related to the pronounced changes of the shape, area size and distribution of the silicon particles along with the reduction of porosity FSP.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Abdulmalik

Ahmad²

2018

IJIE

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“…The earlier research studies on FSW of joining of similar and dissimilar metals by varying process parameters to identify change in mechanical properties of weldments can be seen in [10][11][12][13][14][15]. Studies on the effect of process parameters by using mathematical tools either by Taguchi or Response Surface Methodology can be seen in [9,[17][18][19][20][21][22][23][24]. In all the studies reported earlier one can find optimized values of process parameters either for similar or dissimilar…”

Section: Introductionmentioning

confidence: 99%

Structural Properties of Similar and Dissimilar Aluminum Alloy Joints by FSW

Ramaraju

Ibrahim

Mansor

et al. 2014

Volume 2B: Advanced Manufacturing

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The present study aims to predict the mechanical properties of similar and dissimilar aluminium alloy friction stir Welded joints. The present research also addresses the challenges in joining aluminium alloys Al5083 and Al6061 of 5mm thickness at varying process parameters. A total number of 24 joints have been fabricated with a set of eight joints each for Al6061 (similar), Al5083 (similar) and a combination of Al5083 × Al6061 (dissimilar alloy) as per the experimental plan by Taguchi technique using L8 orthogonal array. The dimensions of the plates are chosen in such a way that the weld length is fixed to 150 mm. The tensile strength and the micro hardness of the welded joints as well as micro structures have been examined. Taguchi technique has been utilized to study the optimized value of the process parameters. The process parameters for joining these have been identified as rotational speeds at 1000 and 1600 rpm, traverse speed 40 and 160mm/min and axial force of 2.5 and 3.5kn.

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“…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.…”

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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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Effect of process parameters on tensile strength of friction stir welded cast A356 aluminium alloy joints

Cited by 33 publications

References 21 publications

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Structural Properties of Similar and Dissimilar Aluminum Alloy Joints by FSW

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

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