Al-7Si-0.4Mg alloys are one of the most commonly applied aluminum in various casting processes. In this study, 0.06%, 0.14% and 0.20% Zr added to gravity cast alloys. The microstructural analysis as-cast with shows formation (Al,Si)3(Zr,Ti) ?-Fe phases. Compared without Zr, have finer grains; additionally, a small secondary dendrite arm spacing (SDAS) is obtained proper content. After T6 heat t...

High thermal conductivity, high strength and non-flammability have successfully been achieved concurrently for the first time in Mg–4.5Al–2.5Ca, Mg–5Al–3Ca, Mg–6Al–4Ca, Mg–4Al–2Ca–0.03Be (at%) alloys, which are produced by hot extrusion of heat-treated cast alloys. These alloys consist ?-Mg, C36, C14 C15 compounds, exhibit a conductivity 111–119 Wm?1K?1, ignition temperature 1343–1408 K tensile...

In this paper, the reasons of damage water pumps parts of the air compressor cooling system were studied. To reach this goal, the works like preparing metallographic samples, evaluation of structure, investigation of mechanical properties, the alloy parts detection and chemical analysis of deposit and corrosion products collected from the parts were performed. According to studies and results o...

aa8090 is an extra light and deformable group of lithium containing aluminum alloys which have recently replaced some aerospace aluminum alloys, such as 2000 and 7000 series, due to their higher elastic modulus and lower specific weight. in this study, aa8090 matrix composites containing 3, 6 and 9 vol.% sic were cast using a modified stir casting method. the casting billets were deformed thoug...

High temperature plastic flow properties of two phase TiAl alloys containing 45 to 49 at.%Al have been investigated in thermo-mechanically grain refined materials in order to clarify the favourable microstructure and chemical composition for TiAl based superplastic materials. Grain sizes of thermomechanical treated materials and their grain size stability during subsequent high temperature defo...

The production volume of metals and their alloys, taking into account the current demand for materials containing steel, cast iron, non-ferrous will continue to increase in near future [...]

FINAL REPORT Background and Motivation There is a need for lightweight structural materials for transportation to improve the performance and energy efficiency. Because magnesium (Mg) is 36% less dense than aluminum (Al) (1.74 g/cm for Mg vs. 2.70 g/cm for Al), Mg-based alloys have received increasing attention lately. The limiting property of Mg and its alloys at the present time is poor ducti...