By hot extrusion at 250°C and electrical pulse treatment (EPT) of 40 ?s duration 10 min processing time, a homogeneous matrix microstructure with an average grain size 0.91 ?m abundant Mg17Al12 phase was obtained in SiCp/AZ91 magnesium composite. Moreover, SiCp were helpful to promote the accumulation crystal defects precipitation phase. After 250°C, yield strength (YS) ultimate tensile (UTS) c...

Metal matrix composites have been increasingly used as materials for components in automotive and aerospace industries because of their improved properties compared with non-reinforced alloys. During machining the selection of appropriate machining parameters to produce job for desired surface roughness is of great concern considering the economy of manufacturing process. In this study, a surfa...

The effect of deep cryogenic treatment (DCT) on the artificial ageing kinetics a SiC particles reinforced aluminum alloy composite (SiCp-Al) is experimentally studied in this paper. evolutions both macro-properties (i.e., yield strength and ultimate tensile strength) microstructures (precipitates) have been investigated by set hardness tests, microstructural observations (scanning electron micr...

SiC-reinforced aluminum matrix composites (SiCp/Al composites) are typically difficult-to-machine material, and the irregular SiC diffused in SiCp/Al make surface quality worse. In this paper, a single-point cutting simulation with variable plane depth were conducted for composite higher volume fraction (65 Vol%) alloy. The morphology characteristics of composites, which mainly include breaking...

The high cost of fabrication hindered the actual application of metal matrix composite (MMC) despite of their high stiffness, strength, corrosion resistance, wear resistance, non-reactivity with chemicals and so many other tailored quality which are never obtained in alloy of metals. In this study, a modest attempt has been made to find out the process parameters at which best mechanical proper...

The Steady state creep behaviour of a functionally graded cylinder made of isotropic composite containing varying distribution of silicon carbide particles has been investigated by a mathematical model. The creep behaviour of the FGM is described by a Norton's Power law. The effect of varying distribution of SiCP particles of creep stresses and creep rates in the FGM cylinder has been anal...

Abstract The single scale SiC p reinforcement has a limited effect on the comprehensive performance of composite, which restricts optimization and improvement its performance. In order to improve material’s strong plasticity, wear resistance, thermal expansion other properties requirements. (micron nano) dual-scale /A356 composites with different volume fractions were prepared using combination...

This paper presents an experimental design approach to the process parameter optimization for compocasting of A356-SiCp composites. Toward this end, parameters of stirring temperature, stirring time, stirring speed and SiC content were chosen and three levels of these parameters were considered. The D-optimal design of experiment (DODE) was employed for experimental design and analysis of resul...

Thermal shock property of the material can be improved by improving fracture property of the material. In this paper, factors affecting fracture property have been studied and the effect of residual stress, microstructure, strain rate and stress concentration on fracture property of material has been analyzed, which may provide help for improving thermal shock property of material. Thermal shoc...

Metal matrix composites (MMCs) are among the very important engineering materials by which the combinations of various properties can be achieved. The MMCs have the great potential for use in automobile and aerospace industries for possessing high strength, stiffness and hardness. The reinforcement types used in the composites are continuous, discontinuous, short, whiskers and particles. The at...