Preparation of Aluminum Metal Matrix Composite with Novel In situ Ceramic Composite Particulates, Developed from Waste Colliery Shale Material

Viscoelastic behavior of a novel aluminum metal matrix composite and comparison with pure aluminum, aluminum alloys, and a composite made of Al–Mg–Si alloy reinforced with SiC particles

“…For the preparation of the novel AMC, aluminum of 99.6% purity was used with reinforcement particles from freshly prepared ceramic composite from CS [1,12] The specimens of Al-Zn-Mg and Al-Cu-Mg alloys for DMA were prepared from sheet of asreceived, commercial AA 7075-T6 and 2024-T3. The T6 temper consists in solution heattreatment at 753 K (480ºC) for 1 h, followed by rapid water quenching to room temperature (RT) and artificial aging at 393 K (120ºC) for 24 h. The T3 temper consists also in solution heat-treatment, followed by rapid water quenching to RT, cold-working and natural ageing.…”

“…For DMA also, rectangular plates with dimensions equal to those mentioned above were machine cut from ingots of A356 alloy and the novel AMC. More details on the studied material and experimental set up can be found for pure aluminum in [4,5], for AA 7075 and 2024 in [13], for AA 6061 reinforced with SiC particles in [8], and for the A356 alloy and the novel AMC in [1,12]. The latter two materials were also analyzed with optical microscope.…”

“…After that, cloth polishing was applied using fine Al 2 O 3 powder. The samples were then polished with Silvo solution, consisting of iso-propyl alcohol, ammonium hydroxide and SiO 2 powder, which was used for cleaning and suspending the tarnish on surfaces and also to protect from oxidation [12].…”

“…This is due to poor wettability of the particles in the melt and due to the density difference between the particles and the matrix. These waste of particles makes fabrication more expensive [1].…”

“…The purpose of using the proposed fabrication procedure was to obtain a cost-effective AMC, and this is achieved thanks to the fact that the proposed technique avoids addition of costly reinforcing agents like Al 2 O 3 or SiC [1].…”