In this study, B4C+SiC/B4C +TiB2/SiC+TiB2 hybrid reinforcements were added to Al 7075 matrix via the powder metallurgy method. The powders subjected mechanical grinding for 240 min, as shown in graphical abstract. composite structure produced by was then placed a vertical casting chamber and molten (main matrix) obtain samples. Samples dissolved 1 h at 480 ?C, aged 120 ?C 4-h increments (32 tot...

In-situ TiB2/AlSi10Mg composites were prepared by casting, gas atomization, and selective laser melting (SLM), respectively. Microstructural evolution of the in as-cast, atomized, SLMed investigated. Compared with as-cast composite, sample has no texture is composed extremely fine grains crystal cells. The in-situ TiB2 particles uniformly distribute over grain boundaries, acicular Si phase repl...

In recent years, as a new method developed for machining difficult-to-cut materials, ultrasonic vibration-assisted technology has been attracting more and attentions due to its superior properties in reducing cutting temperature. However, analytical models revealing the mechanism predicting temperature are still needed be developed. this paper, an model was established predict workpiece milling...

In this study, mechanically milled (MM) Al-24TiO2-20B2O3 powder in molten Al7075 matrix was used order to fabricate in-situ TiB2 and Al2O3 reinforcements matrix. Differential thermal analysis (DTA) examination adopted find reaction temperature between Al, TiO2, B2O3 powders. X-Ray Diffraction (XRD) patterns showed the existence of peaks (750 °C at Ar atmosphere) MM powder. Scanning Electron Mic...