In this study, AA7075/SiC/TiB2 closed-cell aluminium hybrid composite foams (AHCFs) with different densities were fabricated by top-loaded bottom-pouring stir casting technique. This technique uses oyster-shell powders (CaCO3 2.5 wt% of 60 μm size) as blowing agents and no viscosity-enhancing ingredient. The silicon carbide (SiC 0, 3, 6, 9, 12 25 μm) titanium diboride (TiB2 3 particle size 15 a...

Transition metal diborides in hexagonal AlB2 type structure typically form stable MB2 phases for group IV elements (M  =  Ti, Zr, Hf). For group V (M  =  V, Nb, Ta) and group VI (M  =  Cr, Mo, W) the stability is reduced and an alternative hexagonal rhombohedral MB2 structure becomes more stable. In this work we investigate the effect of vacancies on the B-site in hexagonal MB2 and its influenc...

In this paper, we studied the oxidation behavior in AA7075 containing TiB2 nanoparticles. The results indicate that nanoparticles play distinctive roles during coupled processes. At a lower temperature, ruptures Al2O3 film and refine microstructure morphology. Above solutionizing point, Zn proceeds deeply into matrix, partially block diffusion path to increase gradient. TiB2-regulated is respon...

Automotive and aerospace industries are required to light materials which have high properties. This causes to reduce production cost and fuel consumption. One of these advanced materials that have been attracted at these decades is particulate metal matrix nanocomposites. These materials have a combination of ductile matrix alloy properties and ceramic reinforcement nanoparticles. Powder metal...

Due to the advantages over other metallic materials, such as superior corrosion resistance, excellent biocompatibility, and favorable mechanical properties, titanium, its alloys related composites, are frequently utilized in biomedical applications, particularly orthopedics dentistry. This work focuses on developing novel titanium-titanium diboride (TiB2; ceramic material) composites for dental...

The Hugoniot elastic limit and spall strength were measured for a heat-resistant metal-matrix composite Inconel 625–5%NiTi–TiB2 alloy additive manufactured (AM) by direct laser deposition. characteristics of the obtained from analysis complete wave profiles recorded with VISAR Doppler velocimeter during shock-wave loading samples. samples loaded using PP50 pneumatic gun or ad hoc explosive devi...