In this study, we use microstructural investigation to examine the effects of Sc and Ag microalloying elements on mechanical properties Al-Zn-Mg-Cu-based (7050) alloy. Macroscopically, significantly reduce formation intermetallic particles S (Al2CuMg) T (Mg32(Al, Zn)49) stable η (MgZn2) phase in Al7050 addition, element facilitates precipitation η’ hardening phase, while impedes phase. As a res...

Rice Husk Ash (RHA) of three different particle size ranges (50 – 75 μm), (75 – 100μm) and (100 – 150μm) in 3, 6, 9 and 12 % by weight was reinforced with the aluminium alloy using stir cast route. The microstructure and mechanical properties of the fabricated composites were analyzed. The results reveal that the tensile strength, compressive strength and hardness of the aluminum alloy composit...

This paper aims at optimization of process parameters for gas tungsten arc welding (GTAW) of sheet samples of Aluminium alloy AA1100 using AC wave with Argon as inert gas. Tensile properties of parent and welded specimens were determined as per ASTM-E8M standard. Taguchi approach was applied to determine most influential control parameters which will yield better tensile strength of the joints ...

The surface characteristics of an aluminium alloy treated with a commercial chromate pretreatment have been studied by SAM, EDX and XPS. XPS indicates that the chromium is present in the conversion coating as both Cr(III) and Cr(VI) species, and that other components are present at the conversion coating surface, some in a reduced form. The deposition of the chromate layer is compromised by the...

During the past few decades, materials design has shifted emphasis to pursue low cost, quality, light weight, environment friendliness, and performance. Aluminium matrix composites are important class of engineering materials used in aerospace, automotive, engineering, defence and other industries because of their lower density, higher specific strength, and better physical and mechanical prope...

To accurately describe the mechanical properties of aluminium alloy sheet during deformation, an inverse identification was presented to deal with material parameters from the popular punch stretch test. In the identification procedure, the optimization strategy combines finite element method (FEM), Latin hypercube sampling (LHS), Kriging model and multi-island genetic algorithm (MIGA). The pro...

The Metal Matrix Composites application has increased in many areas of science and technology, because its additional physical, wear mechanical properties. In comparison with all MMC’s, aluminum-based MMC’s are finding wide applications due to their better strength weight ratio, stiffness, high thermal conductivity as well very good corrosion properties a composite mainly depend on distribution...