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Tribological Characterization of hybrid metal matrix composites Processed by Powder metallurgy

Acta metallurgica Sinica(English Letters) 2017年第8期30卷 781-790页

作者： M. Megahed M. A. Attia M. Abdelhameed A. G. El-Shafei Department of Mechanical Design and Production Engineering Faculty of EngineeringZagazig UniversityP.O.Box 44519ZagazigEgypt

Aluminum （Al）-based aluminum oxide （Al2O3） and silicon carbide （SIC） particles hybrid metal matrix com- posites were processed by powder metallurgy technique, followed by sintering at 500 ℃ and then hot extrusion. The tribological properties of these composites with different weight fractions of Al2O3 and SiC were investigated; extrusion process significantly reduces the extent of porosity after cold compaction and sintering processes. hybridization of the two reinforcements improved hardness and wear resistance of the composites. With an increase in SiC content, hardness was increased and consequently the wear resistance was enhanced also. Scanning electron microscopy observations show a better interfacial bond between matrix and reinforcements and a better distribution of the reinforcements.

关键词： hybrid metal matrix composite Powder metallurgy Abrasive wear Hardness Porosity

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Optimization of Wear Factors of Aluminium hybrid metal matrix composites Using Taguchi Method

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Journal of Minerals and Materials Characterization and Engineering 2021年第1期9卷 38-47页

作者： P. B. Asha Sneha Sarika Murthy C. R. Prakash Rao V. Ravi Kumar R. Kiran C. N. Suresha Department of Mechanical Engineering Global Academy of Technology Bengaluru India Department of Mechanical Engineering Amruta Institute of Engineering & Management Sciences Bengaluru India

hybrid metal matrix composites (Hmmc) are found to be more superior than the conventional composite materials because of their improved mechanical properties, which can be suited for an extensive range of engineering applications. Automobile and aerospace industries widely make use of hybrid composites as they possess excellent corrosion, wear resistance, low density, and high strength. This paper displays the strategy to build the hybrid composite utilizing Stir casting Method. Present investigation includes the creation of composites utilizing boron carbide (2%, 4%, 6% volume) and Red mud (2% volume) as the reinforcements and Structural aluminium as the matrix. Experimental investigation of wear analysis of the composites was carried out according to the L9 Taguchi method. The designated number of experiments was accomplished to probe the impact of control factors on the specific wear rate (SWR) of the developed composites. ANOVA was carried out and Wt%. Reinforcement was found to be the decisive factor on the SWR of the developed hybrid composite. The Confirmatory test was successfully carried out and the computed error was found to be varying from 0.878% to 2.58%.

关键词： Taguchi ANNOVA Wear Signal-to-Noise Ratio hybrid metal matrix composite

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Taguchi approach to influence of processing parameters on erosive wear behaviour of Al7034-T6 composites

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Transactions of Nonferrous metals Society of China 2017年第10期27卷 2163-2171页

作者： B.A.MUDASAR PASHA Kaleemulla MOHAMED Department of Mechanical Engineering GMIT Davanagere 577004 Karnataka India Department of Mechanical Engineering UBDTCE Davanagere 577004 Karnataka India

Taguchi technique was used to predict the influence of processing parameters on the erosive wear behavior Al7034-T6composite reinforced with SiC and Al2O3particles in different mass *** hybrid metal matrix composites(HMMCs)werefabricated by using a simple technique called stir casting *** electron microscope(SEM)was used to study thesurface morphology of the composite and its evolution according to processing *** design of experiment(DOE)based onTaguchi’s L16orthogonal array was used to identify various erosion *** most influencing parameter affecting the wear rate *** results indicate that erosion wear rate of this hybrid composite is greatly influenced more by filler content and impactvelocity respectively compared to other *** also shows the significant wear resistance with the increase in the filler contentsof SiC and Al2O3particles,respectively.

关键词： hybrid metal matrix composite erosive wear stir casting SiC Al2O3 Taguchi design

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