Influence of cooling conditions on tensile lap shear strength and microstructure of friction stir welded aluminum alloy 5052-H32 and polycarbonate light weight hybrid joint

Nagarajan, Bala Murali; Manoharan, Manikandan

doi:10.1016/j.jmapro.2022.08.008

Cited by 19 publications

(4 citation statements)

References 33 publications

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“…A maximum volume proportion of reinforcement (>14%) is responsible for the observed upward trend in wear loss. Te minimum process temperature of the MMC prevents difusion between the B 4 C and AA5052 particles, resulting in weak bonding in the clustered particles that make up the microstructure of MMCs [32,33]. Because of this, particles are easily knocked of the sample's surfaces during the wear test [34].…”

Section: Wear Behaviormentioning

confidence: 99%

Study of Microstructure and Wear Resistance of AA5052/B4C Nanocomposites as a Function of Volume Fraction Reinforcement to Particle Size Ratio by ANN

Kumar

Balamurugan²,

Suresh³

et al. 2023

Journal of Chemistry

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The effects of the percentage volume of reinforcement, the ratio of reinforcement, and the matrix size of particles on the wear behavior of AA5052/B4C metal matrix composites (MMCs) examine. This research examines a model function developed from an artificial neural network (ANN). AA5052/B4C composites bent using a powder metallurgy technique to hardness and ball-on-disc wear testing. There are two exemptions such as (1) when the percentage volume of reinforcement is less than 8% and (2) when the ratio of reinforcement particle size (Rs) and matrix particle size (Ms) increases before decreasing. The results show that wear loss decreases with increasing percentage volume of reinforcement and ratio of Rs and Ms. In the second case, wear loss is increased at high levels of percentage volume (14%) since the proportion of reinforcement and matrix size of the particle is close to 1. When the volume percentage of reinforcement is high (14%) and the matrix and reinforcement particle sizes are substantial (120 m), the reinforcement particles become dislodged and break. Because these broken-up particles are easily removed from the surface, the material’s wear resistance is reduced. In this case, raising the volume fraction yields a uniformly higher hardness for all Rs/Ms values; hence, composites with lower reinforcement volume percentages show better wear resistance. Hardness and wear resistance have no relationship with one another.

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Section: Wear Behaviormentioning

confidence: 99%

Study of Microstructure and Wear Resistance of AA5052/B4C Nanocomposites as a Function of Volume Fraction Reinforcement to Particle Size Ratio by ANN

Kumar

Balamurugan²,

Suresh³

et al. 2023

Journal of Chemistry

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“…The control of excessive polymer flow overflow was verified in the welding test between 7075 Al alloy and SGF/PEEK, and defects, such as pores and cracks were suppressed. Nagarajan et al 19 studied the effects of air and water on the properties of lap joints in PC and 5052‐H32 Al alloy FSW. The results showed that the uniformity and density of the joint microstructure were improved under water conditions, and the shear strength of the joint was increased by about 16%.…”

Section: Introductionmentioning

confidence: 99%

Study on the thermal assistance friction stir lap welding of aluminum alloy and CFRTP

Sun,

Zhang,

Wei

et al. 2024

Polymer Composites

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With the rapid development of transportation and electronic equipment industries, lightweight requires reliable joining technology for metal/polymer. Preheating before welding is a potential way to improve the tensile properties of the joint and reduce the risk of defect formation. In this study, thermal assistance friction stir lap welding (TA‐FSLW) in joining 6061‐T6 aluminum alloy and carbon‐fiber‐reinforced thermoplastic (CFRTP) is investigated. The welds are evaluated by OM image segmentation and statistical calculation, temperature detection in thermal imaging, SEM and EDS of the fracture, tensile, and hardness analysis. From the quantitative analysis results of the width of the CFRTP side‐melting zone and the area of Al alloy fragments in the welding zone, the movement of the polymer chain in the CFRTP of joint is intensified by thermal assistance, which reduces the thickness of the melting zone on the side of the composite material. The area of metal fragments ranges from 100 to 2 × 106 μm2. The microscopic analysis results indicate that preheating enhances the initial thermal motion of molecules. Gaseous polymers are dissociated from the molten state, reducing the number of bubbles in the composite material. Small size fragments are inserted into the molten CFRTP and mechanical interlocking is enhanced due to the uniform interweaving of metals and polymers. A maximum tensile strength of 39.97 MPa is achieved, which increases by 37.6% compared with the conventional FSLW.Highlights Thermal assistance friction stir welding technology is applied to the welding of aluminum alloy with carbon‐fiber‐reinforced thermoplastic. The number and area of aluminum alloy fragments are counted and analyzed by the metal segmentation counting algorithms. Thermal assisted technology reduces the thickness of the melting zone of CFRTP and enhances the material flow and refinement of aluminum alloy fragments.

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“…Numerous studies in the literature investigated the different advanced joining methods such as mechanical clinching [5], friction stir lap welding [6] [7], direct laser joining [8], injection molding [9], and hot press joining [10]. Lambiase et al [3] reviewed the advanced joining methods and classi ed them based on the joining mechanism.…”

Section: Introductionmentioning

confidence: 99%

Joining of polymer to metal using material extrusion additive manufacturing

Alhmoudi,

Sheikh-Ahmad,

Almaskari

et al. 2023

Int J Adv Manuf Technol

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This study investigates the joining of metal to polymer by material extrusion additive manufacturing. Direct joining by layered extrusion was used to fabricate hybrid single lap joints of Acrylonitrile Butadiene Styrene (ABS) and Aluminum alloy 5052. The in uence of the printing speed, bed temperature and nozzle Z-offset on the lap shear strength was studied experimentally. The interface between the two materials was also observed under scanning electron microscope and the chemical state of the polymer after printing was analyzed using differential scanning calorimetry (DSC), Raman spectroscopy and X-ray Photoelectron Spectroscopy (XPS). The results revealed that elevated bed temperature and pressure application through lowering the Z-offset promoted better polymer lling of the metal surface structure and improved the joint strength by mechanical interlocking. Also, long exposure time to the heated build plate corresponding to low printing speeds lowered the mechanical performance of the polymer bulk due to thermal degradation. Mechanical interlocking was the main joining mechanism, but under high bed temperatures where the carbonyl group had formed due to degradation, a (C-O-Al) chemical bond was detected.

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Influence of cooling conditions on tensile lap shear strength and microstructure of friction stir welded aluminum alloy 5052-H32 and polycarbonate light weight hybrid joint

Cited by 19 publications

References 33 publications

Study of Microstructure and Wear Resistance of AA5052/B4C Nanocomposites as a Function of Volume Fraction Reinforcement to Particle Size Ratio by ANN

Study of Microstructure and Wear Resistance of AA5052/B4C Nanocomposites as a Function of Volume Fraction Reinforcement to Particle Size Ratio by ANN

Study on the thermal assistance friction stir lap welding of aluminum alloy and CFRTP

Joining of polymer to metal using material extrusion additive manufacturing

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