Friction Stir Processing of Al with Mechanically Alloyed Al-TiO2-Graphite Powder: Microstructure and Mechanical Properties

Beygi, R.; Mehrizi, M. Zarezadeh

doi:10.1007/s11665-017-2552-7

Cited by 24 publications

(7 citation statements)

References 42 publications

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“…Also, the morphology of reinforced particle plays an important role as reported by Beygi et al 67 The yield strength and tensile strength of a sample processed with ball-milled powder increases significantly and is higher than the sample with as-mixed powder. They attributed this improvement to fine TiC particles produced in situ during the friction stir processing.…”

Section: Mechanical Properties Of Fs Welded Amc Jointsmentioning

confidence: 82%

“…Beygi et. al 67 studied the friction stir processing of Al with mechanically alloyed Al-TiO2-graphite powder and found higher values of hardness in the SZ of a sample processed with ball-milled powder when compared to the sample with as-mixed powder as shown in Figure 13, 67 and have attributed this outcome to the finer size of particles in the SZ of sample processed with ball-mixed powder.…”

Section: Microhardness Of Fs Welded Amc Jointsmentioning

confidence: 99%

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Joining of aluminium matrix composites using friction stir welding: A review

Mir

Khan

Siddiquee

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Aluminium matrix composites are one of the most important classes of materials and have become a major focus of attention in aerospace, aeronautical, defense, and automotive industries. Aluminium matrix composites when compared to conventional alloys offer various promising properties like excellent strength-to-weight ratio, higher stiffness, lower coefficient of thermal expansion, better dimensional stability, and tribological behavior. The properties of aluminium matrix composites are highly influenced by the appropriate selection of metal matrix, processing routes, and reinforcement. Various ceramic particles (oxides, carbides, nitrides, borides, etc.) are used as reinforcements for aluminium matrix composites. Significantly different properties may be obtained using various reinforced particles and matrix material, which makes it difficult for the traditional fusion welding techniques to meet the joining requirements of these composites and is restricted to certain grades of materials. Solid-state welding process offers greater advantages over the conventional fusion welding. As a solid-state joining process, friction stir welding has proven to be a better and promising technique for joining aluminium matrix composites. However, it is still subjected to various challenges to join aluminium matrix composites even with considerable progress has been made in recent years. The current review provides an overview of state-of-the-art of friction stir welding of aluminium matrix composite materials. Specific attention and critical assessment have been given to weldability, the macrostructure and microstructure of aluminium matrix composite joints, mechanical properties of joints, fractography, and the wear of friction stir welding tool during welding of aluminium matrix composite. Furthermore, the various existing challenges of friction stir welding of aluminium matrix composites are summarized and the recommendations for future research are proposed.

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Section: Mechanical Properties Of Fs Welded Amc Jointsmentioning

confidence: 82%

Section: Microhardness Of Fs Welded Amc Jointsmentioning

confidence: 99%

Joining of aluminium matrix composites using friction stir welding: A review

Mir

Khan

Siddiquee

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The tensile strength of an FSW joint made of AA2024 and AA7075 alloys was estimated using multilayer perceptron artificial neural network optimization method [14]. The study investigates the friction stir process on experimental samples using two distinct powders [15]. A study on optimizing machining parameters in fiberreinforced particulate composites is a significant step forward, providing valuable insights for future particlereinforced polymer composite researches [16].…”

Section: Introductionmentioning

confidence: 99%

Multi-criteria optimization on friction stir welding of aluminum composite (AA5052-H32/B₄C) using titanium nitride coated tool

Paul,

Thilagham,

K G

et al. 2024

Eng. Res. Express

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The boron carbide (B4C) reinforced AA5052-H32 aluminium composite has been initially fabricated by stir casting method. Friction stir welding (FSW) is used to join two similar AA5052-H32/B4C plates using a titanium nitride (TiN)-coated square tool. The tool wear loss, microhardness, and tensile strength of FSW joints have been investigated by the Taguchi technique. Welding parameters consist of TiN coating thickness, tool rotational speed, welding speed, and axial thrust. Taguchi analysis is used to determine the influences, contributions, and best values of welding parameters to meet optimal welding attributes. The maximum tensile strength (140.134 MPa) has been obtained by increasing the TiN coating thickness, tool's rotational speed, axial thrust, and welding speed. At the highest tool speed and axial trust, the maximum microhardness (158.3 HV) has been attained. The minimum tool wear loss (9.023 %) has been obtained by welding at a moderate speed with maximum rotational speed, axial thrust, and TiN coating thickness. Fractography and SEM analysis have been used to analyze the microstructural behaviour of welded aluminium composite materials and worn-out tool surfaces. The Additive Ratio Assessment (ARAS) multi-criteria optimization technique has been applied to predict the best welding parameters to attain the optimal welding characteristics. The 40 µm TiN coating thickness, 1200 rpm tool rotation, 20 mm/min welding speed, and 6000N axial force are predicted to achieve 108.6 MPa tensile strength, 110 HV microhardness, and 9.37% tool wear loss.

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“…They mentioned that the hybrid combination composites showed more superior mechanical and corrosion properties over single reinforced composites. R. Beygi et al [27] fabricated Al-TiC/Graphite hybrid composites using FSP with as-mixed Al-TiO 2 -Gr powder mixture. They found a higher hardness and yield strength due to TiC (100 nm) produced in-situ for hybrid composites ball-milled mixture than that of as-mixed mixture.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Friction Stir Process Parameters for Enhancement in Surface Properties of Al 7075-SiC/Gr Hybrid Surface Composites

et al. 2019

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Friction stir processing (FSP) has evolved as an important technique in fabrication of metal matrix composites. The surface properties enhancement is obtainable by insertion of desired discontinuous particular reinforcements into base alloy using FSP. Despite having high specific strength, more applications of Al alloys are restricted due to their poor surface properties under various loading conditions. In this study, the main focus is on enhancing the microhardness and wear properties of Al 7075 base alloy by means of uniform dispersion of silicon carbide and graphite (SiC/Gr) nano particles into the base alloy using the FSP technique. The tool rotational speed (w: 500, 1000, 1500 rpm), tool traverse speed (v: 20, 30, 40 mm/min), reinforcement particles hybrid ratio (HR: 60:40, 75:25, 90:10) and volume percentage (vol%: 4%, 8%, 12%) are used as independent parameters. The effect of these parameters on microstructure, micro hardness and wear properties of surface composites are studied in detail. For desired wear rate and microhardness as responses, the aforementioned independent parameters are optimized using response surface methodology (RSM). The significance of factors and their interactions for maximizing hardness and minimizing wear rate and coefficient of friction (COF) were determined. Analysis of variance (ANOVA) for responses has been carried out, and the models were found to be significant in all three responses. The minimum wear rate of 0.01194 mg/m was obtained for parameters w 1500 rpm, v 40 mm/min, HR 60:40, vol% 4 (Run 10). The maximum micro hardness of 300 HV obtained for parameters w 1000 rpm, v 30 mm/min, HR 75:25, vol% 12 (Run 14). The presence and uniform distribution of SiC and Gr into the base alloy was confirmed through field-emission scanning electron microscopy (FESEM) imaging, energy-dispersive X-ray spectroscopy (EDX) and mapping tests. The wear rate and COF decreased significantly due to graphitized mechanically mixed layer developed at the sliding contacts. The microhardness of resultant composites observed to be dependent on effect of the independent parameters on extent of inherent precipitates dissolution and grain size strengthening in the resultant materials.

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Friction Stir Processing of Al with Mechanically Alloyed Al-TiO2-Graphite Powder: Microstructure and Mechanical Properties

Cited by 24 publications

References 42 publications

Joining of aluminium matrix composites using friction stir welding: A review

Joining of aluminium matrix composites using friction stir welding: A review

Multi-criteria optimization on friction stir welding of aluminum composite (AA5052-H32/B₄C) using titanium nitride coated tool

Optimization of Friction Stir Process Parameters for Enhancement in Surface Properties of Al 7075-SiC/Gr Hybrid Surface Composites

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Friction Stir Processing of Al with Mechanically Alloyed Al-TiO2-Graphite Powder: Microstructure and Mechanical Properties

Cited by 24 publications

References 42 publications

Joining of aluminium matrix composites using friction stir welding: A review

Joining of aluminium matrix composites using friction stir welding: A review

Multi-criteria optimization on friction stir welding of aluminum composite (AA5052-H32/B4C) using titanium nitride coated tool

Optimization of Friction Stir Process Parameters for Enhancement in Surface Properties of Al 7075-SiC/Gr Hybrid Surface Composites

Contact Info

Product

Resources

About

Multi-criteria optimization on friction stir welding of aluminum composite (AA5052-H32/B₄C) using titanium nitride coated tool