Abstract
In this research, the mechanical properties and microstructure of Al-15 wt % TiC composite samples prepared by spark plasma, microwave, and conventional sintering were investigated. The sintering process was performed by the speak plasma sintering (SPS) technique, microwave and conventional furnaces at 400 °C, 600 °C, and 700 °C, respectively. The results showed that sintered samples by SPS have the highest relative density (99% of theoretical density), bending strength (291 ± 12 MPa), and hardness (253 ± 23 HV). The X-ray diffraction (XRD) investigations showed the formation of TiO2 from the surface layer decomposition of TiC particles. Scanning electron microscopy (SEM) micrographs demonstrated uniform distribution of reinforcement particles in all sintered samples. The SEM/EDS analysis revealed the formation of TiO2 around the porous TiC particles.
Highlights
Aluminum matrix composites (AMCs) have a distinct place in automotive and aerospace industries due to their superior properties such as high specific strength and Young’s modulus, low cost, and good wear resistance [1,2,3,4]
TiC is a carbide with high hardness, high elastic modulus, high thermal conductivity, and low density, which make it a proper reinforcement for aluminum composites [15,16]
InIn thethe precision of X-ray diffraction (XRD), the only crystalline phases detected after sintering by were aluminum and precision of XRD, the only crystalline phases detected after sintering by speak plasma sintering (SPS) were aluminum and titanium carbide
Summary
Aluminum matrix composites (AMCs) have a distinct place in automotive and aerospace industries due to their superior properties such as high specific strength and Young’s modulus, low cost, and good wear resistance [1,2,3,4]. Sintering steps in PM process such as blending and compacting have a brilliance effect on the final methods, so they are promising methods to achieve uniform dispersion of the reinforcement particles. Sintering in PM process such as blending and compacting have a and brilliance effect on the finalare advanced sintering techniques in comparison with other conventional methods. Each of these methods properties of product [37,38,39]. [46] used the conventional for Al-TiC nano composite sintering at 500, 550, and 600 M. in aetprotective argon atmosphere, method and reported a reasonable hardness.
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