Pin-on-disk tests were performed to evaluate the wear behaviour of a 2024 aluminium alloy metal matrix composite (MMC) reinforced with 52 vol.% TiC particles (Al-2024/TiC) in fabricated and thermal-treated (T6) condition. The MMC was produced via pressureless infiltration partially sintered preforms an average particle size 1.1 μm at 1200 °C for 2 h under flowing argon. Microstructural mechanic...

We justified theoretical and experimental bases of synthesis of new class of highly nanostructured composite nanomaterials based on metal matrix with titanium carbide nanowires as dispersed phase. A new combined method for obtaining of metal iron-based composite materials comprising the powder metallurgy processes and the surface design of the dispersed phase is considered. The following stages...

This paper presents the results of study dynamic impact behaviour AA2124-SiC Metal Matrix Composite (MMC) material with different particle reinforcement sizes and qualities using a compressive Split-Hopkinson Pressure Bar (SHPB) apparatus. Mechanical tests were performed at strain rates 1000 s?1, 2000 3000 s?1 temperatures room temperature (25 °C), 100 °C 200 °C. Microstructural analyses carrie...

Polymorphic materials which are subjected to an external stress while their temperature is repeatedly cycled about their phase transformation range experience, on average, Newtonian flow, which is driven by the biasing of internal transformation mismatch stresses by the external stress (1). This phenomenon, termed transformation superplasticity, is well documented for metals (as reviewed in Ref...

Metal matrix composite (MMC) technology can improve the service performance of matrix metals and alloys. Most magnesium alloy based MMCs are produced via a casting process, therefore the casting microstructures are of vital importance to their performance in service. The formation of microstructure during solidification of MMCs is mainly influenced by four factors: nucleation (or its absence) o...

Wettability at the metal-ceramic interface is highly important for development of modern composite materials. Poor wettability by metal melts restricts use alumina in protective matrix (MMC) coatings. In present experimental study, possibility to modify wetting properties thermochemical surface boronizing was investigated. The results SEM, EDS, XRD and XPS characterisation surfaces revealed for...

Aluminium metal matrix composites reinforced with SiC and B4C particles are a unique class of advanced engineered materials that have been developed to use in high strength , high wear resistant and tribological applications. The conventional techniques of producing these composites have some drawbacks. In this study, the aluminium hybrid composite is fabricated using stir casting method. 10 % ...