Aluminium hybrid composites are a new generation of metal matrix composites that have the potentials of satisfying the recent demands of advanced engineering applications. These demands are met due to improved mechanical properties, amenability to conventional processing technique and possibility of reducing production cost of aluminium hybrid composites. The performance of these materials is mostly dependent on selecting the right combination of reinforcing materials since some of the processing parameters are associated with the reinforcing particulates. A few combinations of reinforcing particulates have been conceptualized in the design of aluminium hybrid composites. This paper attempts to review the different combination of reinforcing materials used in the processing of hybrid aluminium matrix composites and how it affects the mechanical, corrosion and wear performance of the materials. The major techniques for fabricating these materials are briefly discussed and research areas for further improvement on aluminium hybrid composites are suggested.

https://cyberleninka.org/article/n/425909.pdf

Aluminium matrix hybrid composites: a review of reinforcement philosophies; mechanical, corrosion and tribological characteristics

Analysis of Stir Cast Aluminium Silicon Carbide Metal Matrix Composite: A Comprehensive Review☆

Tribological behaviour of aluminium alloy (Al-Si10Mg) reinforced with alumina (9%) and graphite (3%) fabricated by stir casting process was investigated. The wear and frictional properties of the hybrid metal matrix composites was studied by performing dry sliding wear test using a pin-on-disc wear tester. Experiments were conducted based on the plan of experiments generated through Taguchi’s technique. A L27 Orthogonal array was selected for analysis of the data. Investigation to find the influence of applied load, sliding speed and sliding distance on wear rate, as well as the coefficient of friction during wearing process was carried out using ANOVA and regression equations for each response were developed. Objective of the model was chosen as ‘smaller the better’ characteristics to analyse the dry sliding wear resistance. Results show that sliding distance has the highest influence followed by load and sliding speed. Finally, confirmation tests were carried out to verify the experimental results and Scanning Electron Microscopic studies were done on the wear surfaces.

/pdf/tribological-behaviour-of-aluminium-alumina-graphite-hybrid-2mnrrvdj2t.pdf

Tribological Behaviour of Aluminium/Alumina/Graphite Hybrid Metal Matrix Composite Using Taguchi’s Techniques

Characterization and experimental analysis of boron carbide and rice husk ash reinforced AA7075 aluminium alloy hybrid composite

It is apparent that technological development depends on advances in the field of materials. One may design most durable and highly efficient automobile or aircraft; however, without appropriate materials to fulfill the design requirements, the product may not be realistic. Therefore, to enhance the performance of engineering materials in line with technological development, engineers and scientists are always striving to improve existing materials or to produce new materials. Metal Matrix Composites (MMCs) are example of such newly emerging engineering materials. However, MMCs are more expensive than their competitors. Cost is the key factor for their wider application in modern industry. Cost reductions can be achieved by cheaper reinforcements, simpler fabrication methods, and higher production volume. Refractory particles are relatively cheaper and easily available reinforcements. Particulate reinforced MMCs are economically processed through the stir casting route. However, in stir casting process, t...

The Key Attributes of Synthesizing Ceramic Particulate Reinforced Al-Based Matrix Composites through Stir Casting Process: A Review

Metal Matrix Composites (MMCs) have evoked a keen interest in recent times for potential applications in aerospace and automotive industries owing to their superior strength to weight ratio and high temperature resistance. The widespread adoption of particulate metal matrix composites for engineering applications has been hindered by the high cost of producing components. Although several technical challenges exist with casting technology yet it can be used to overcome this problem. Achieving a uniform distribution of reinforcement within the matrix is one such challenge, which affects directly on the properties and quality of composite material. In the present study a modest attempt has been made to develop aluminium based silicon carbide particulate MMCs with an objective to develop a conventional low cost method of producing MMCs and to obtain homogenous dispersion of ceramic material. To achieve these objectives two step-mixing method of stir casting technique has been adopted and subsequent property analysis has been made. Aluminium (98.41% C.P) and SiC (320-grit) has been chosen as matrix and reinforcement material respectively. Experiments have been conducted by varying weight fraction of SiC (5%, 10%, 15%, 20%, 25%, and 30%), while keeping all other parameters constant. The results indicated that the ‘developed method’ is quite successful to obtain uniform dispersion of reinforcement in the matrix. An increasing trend of hardness and impact strength with increase in weight percentage of SiC has been observed. The best results (maximum hardness 45.5 BHN & maximum impact strength of 36 N-m.) have been obtained at 25% weight fraction of SiC. The results were further justified by comparing with other investigators.

/pdf/development-of-aluminium-based-silicon-carbide-particulate-3kxzvq93wd.pdf

Development of Aluminium Based Silicon Carbide Particulate Metal Matrix Composite

In recent years, aluminum alloy based metal matrix composites (MMC) are gaining importance in several aerospace and automobile applications. The researchers have adopted several processing techniques like ultrasonic assisted casting, powder metallurgy, high energy ball milling, and liquid stir casting for the production of Aluminum matrix composites. Different Aluminium alloys and reinforcements (SiC, B4C, Si3N4, AlN, TiC, TiB2) with varying % weight fraction have been used for development of AMC. The high abrasiveness of the SiC particles limits the conventional machining process. Rapid tool wear with poor performance even with advanced expensive tools categories it as a difficult-to-cut material. The use of nonconventional machining techniques in shaping aluminum metal matrix composites has generated considerable interest due to ease of machining. Electrical discharge machining (EDM) appears to be a promising technique for machining MMC by varying process parameters. In this paper, review on liquid stir casting followed by centrifugal casting and machining by EDM has been focused.

http://www.ijsrd.com/articles/IJSRDV2I10376.pdf

D. Deepak Dwivedi

Papers

Development of Aluminium Based Silicon Carbide Particulate Metal Matrix Composite

Development of Al-Sic MMC and Experimental investigation by Electro discharge machining - A Review