Mechanical Properties and Micro-Structural Study of Sintered Aluminium Metal Matrix Composites by P/M Technique

Abstract

Material world requires a strong research to produce a new class of materials having light weight, higher strength and better performances. This has been leads to investigate for high strength light weight alloy. The main objective in developing aluminium metal matrix composites is to provide enhanced characteristic performances and properties above the currently available materials. Based upon the literature a new type of aluminium composite has been tries to develop which will offer attractive mechanical properties such as high strength, easy machinability, appreciable density, and low manufacturing cost etc. Aluminum powders of 99.55% purity and 325 mesh sizes are mixed with alloying metals like Copper, Magnesium, Silicon and Silicon Carbide powders in a precisely controlled quantity. During the process of powder metallurgy (P/M) product preparation, it was minutely observed to attain the maximum efficiency and accuracy. Aluminium (Al) is a light weight material but doesn’t possess a good strength. To achieve this, Copper (Cu), Silicon (Si), Magnesium (Mg) & Silicon Carbide (SiC) powders were blended with it at required proportions. The compaction was carried out with help of a C-45 steel die by power compaction press with a load of 150KN to 250KN. The obtained green products were sintered in a Muffle furnace to produce the final Aluminium Metal Matrix Composites (AMMCs) product.

Study on Compaction and Machinability of Silicon Nitride (Si3N4) Reinforced Copper Alloy Composite through P/M Route

“…The compact green billets before sintering and after sintering are shown in Figure 3. The soaking process is essential to modifying the composite billets' microstructure [25][26][27][28].…”

Investigations into dry‐sliding wear behaviour of a novel composite (aluminium‐magnesium‐silicon‐copper‐silicon carbide) produced by powder metallurgy route

“…The powder metallurgy method was used here for the manufacture of composite samples [21]. This method may be an economical way to obtain composites with powder particles.…”

“…Aluminum powder which was used here as a main raw material known as matrix material and was reinforced with copper, magnesium, silicon, silicon carbide [21]. The composite‐material was developed with powder metallurgy process and was rein‐forced with 5 percent, 10 percent, and 15 percent silicon carbide on weight basis individually.…”

Study on Dry Sliding Wear Characteristics by Taguchi Analysis of Al-Mg-Si-Cu-SiC Composite Prepared by Powder Metallurgy Method

“…Due to the introduction of high-performance and lightweight aluminum metal matrix composites (AMMC) for the automotive, aerospace, and consumer markets, it was possible to achieve a uniform distribution of reinforcements within a matrix element while producing usable, superior quality composite materials. The most commonly used composite system with the metal matrix aluminum reinforced with silicon carbide, magnesium, copper, and silicon prepared an aluminum-metal matrix composite through powder metallurgy (PM), which is a new variety of composite material having required properties like less density, high stiffness and strength, good thermal coefficient of expansion, better fatigue resistivity and excellent stable dimension at elevated temperatures [1][2][3]. An aluminum-alloy has excellent mechanical properties such as low density, higher thermal conductivity, strength to weight ratio, good ductility, and corrosion resistance, among others [4].…”