Ti/SiC Based Metal Matrix Composites by Using Self-Propagating High Temperatures Synthesis (SHS)

Abstract

In the present paper, Ti/SiC composite materials have been fabricated by using Selfpropagating high temperatures synthesis (SHS). SHS is a well-known method for fabrication of the advanced materials in a single step process and is based on a system that involves an exothermic combustion. Titanium powder (Ti/p) with average particle size 100 µm and Silicon carbide (SiC) with 100-320 µm particle size range has been mechanically activated by attrition mill. Powder weighing has been prepared in accordance to the size of each volume fraction where the ratios for Ti/SiC are 70:30% and 60:40%. The optimal density results were achieved in the volume fraction of 70:30% at 1000º C for 4.54 gr/cm 3 . The porosity test data has shown that the porosity value has been increased during the increasement of the SHS sintering temperature. The lowest porosity was produced at a volume fraction of 70:30% in a sintering temperature at 900º C with the corresponding value 2.36%. The highest and lowest hardness value varied from 194 HV to 40 HV. The results have shown that mechanical properties of the Ti/SiC composite materials have been increased in comparison to the commercially pure titanium substrate and almost close to mechanical properties of Al/SiC composite materials.

Investigating Shearing, Ploughing, and Particle Fracture Forces in Turning of Low Percent Reinforcement Al/B4C Metal Matrix Composites

“…(5) Ploughing and particle fracture forces increment with rising particulate fractions in the MMCs. (6) The ranges of increments in chip thicknesses emerge as better indicators of different MMC compositions. (7) Progressively lower percent compositions exhibit bigger chip thickness ranges.…”

“…Metal matrix composites (MMCs) are new age materials that have attracted a lot of attention in recent years owing to their superior strength to weight characteristics over conventional monolithic materials [1][2][3][4][5][6]. Researchers have focused their attention broadly on to a) variety of compositions possible through a spectrum of synthesis techniques, b) the improvements in mechanical properties possible and c) modeling behaviors of these materials under different machining methods and parameters.…”

High Strength of Aluminium-Based Composites by Different Methods of Severe Plastic Deformation (SPD)

“…The APB process shown in figure 4f, the clusters and particle-free zone of the reinforcing ceramic material almost disappear, and the composite contains a truly uniform ceramic reinforcement particle distribution. If there is a change in the morphology of the grain, it will affect the increase in mechanical properties, but the volume fraction of the reinforcing particles will tend to decrease [20][21][22]. Increasing the number of cycles in all processes will cause reinforcing particles to spread from the interface to all parts of the aluminium matrix so that the distribution of the reinforcing particles will increase.…”

Analysis of Stress Distribution of Composites Based on Hydroxyapatite by Finite Element Method

“…HAp is also found in the structure of human teeth, especially in dentine and enamel, therefore the role of HAp is very important in the world of human health [6]. HAp elements can be obtained from cow bones, where the main component of bone is organic minerals with a composition of about 65% which generally consists of apatite compounds, 25% organic compounds which generally consist of collagen, and 10% consists of water consisting of water which binds to mineral-collagen composite as well as unbound water molecules that flow freely through blood vessels in bone [7][8].…”