Processing and Manufacturing of Metal Matrix Aluminum Alloys Composites Reinforced by Silicon Carbide and Alumina through Powder Metallurgy Techniques

Abstract

Composites are combinations of two materials in which one of the materials, called the reinforcing phase, is in the form of fibers, sheets, or particles and is embedded in the other materials called the matrix phase. If the composite is designed and fabricated correctly, it combines the strength of the reinforcement with the toughness of the matrix to achieve a combination of desirable properties not available in any single conventional material. In this work of research aluminium alloy AA6061 was reinforced by 5, 10 and 15% (in mass %) of SiC and Al2O3 by mechanical alloying in a vibratory type SPEX mill, cold uniaxial compaction and vacuum sintering in order to investigate the influence of the particulate phase in the microstructure and mechanical properties of the composites obtained. The microstructure of the powders and the sintered materials were evaluated by SEM and the hardness was evaluated by hardness tests.

Development of a Low-Temperature Process for the Formulation of Nanoemulsion-Gel Encapsulating Essential Oil: Investigation on the Wound Healing Effect

“…Limonene (5.2%) has a gastroprotective property [74], reduces oxidative stress [74], prevents and controls injuries in the respiratory system by treatment of inflammation [75], and anticancer activity [76].…”

Characterization of the Al6061 Alloy Reinforced with SiC Nanoparticles and Prepared via Powder Metallurgy

“…Among aluminum alloys, AA6061 is widely used as a matrix material in the manufacture of MMCs. It is noted that Al6061-SiC composites have been prepared either by liquid processes [7,[20][21][22][23][24][25][26][27][28][29][30][31][32] or solid-state processes using different techniques [4,[33][34][35][36][37][38][39][40][41]. Previous research [4,[35][36][37]40] on the fabrication of AMMCs, such as AA6061 aluminum alloy reinforced with SiC particles, used powder metallurgy to prepare these composites.…”

EFFECT OF HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF EXTRUDED SiC/6061 COMPOSITE

“…Discontinuously reinforced aluminium alloy matrix composites are a good choice for engineering applications due to their excellent properties such as low density, good strength, high stiffness, superior wear resistance and low coefficient of thermal expansion [1][2][3]. Among reinforcements, SiC particles are suitable due to maintain good thermal and chemical stability during production of composites and good strength at service conditions [4]. Properties of SiC aluminium matrix composites are affected by the microstructure, distribution of SiC particles, SiC particles volume fraction and magnitude of reinforcement [5][6][7].…”