Metallurgical parameters controlling the microstructure and hardness of Al–Si–Cu–Mg base alloys

Effect of intermetallics on the microstructure and tensile properties of aluminum based alloys: Role of Sr, Mg and Be addition

“…The cooling rate used has a direct effect on the resulting grain size as well as the size of the microconstituents which precipitate, and the amount of porosity formed. These variables, in turn, can affect the mechanical properties and the fracture behavior of the alloy [10,11].…”

“…An intensive study [10] was carried out to examine the decomposition of π-Al 8 FeMg 3 Si 6 phase in Al-Si-Mg type B357 alloy. This study concentrated on investigating the characteristics of β-Al 5 FeSi phase as it is the iron intermetallic phase most detrimental to the mechanical properties of such alloys.…”

Effects of strontium and heat treatment on the wear-corrosion property of Al–7Si–0.3Mg alloy

“…The stress increase is needed to move the dislocations through a lattice containing the precipitates that means strengthening of A356 alloy. As the metastable precipitates grow on further aging (T7 heat treatment), the needles grew to become semi-coherent rods (b 0 phase) and finally non-coherent plates (stable b phase) [15]. The size of precipitate increased, but the number of precipitates decreased.…”

Experimental Study on Aluminium Based Alloys with Dispersed Intermetallic Compound (Al2CuMg) for Industrial Applications

“…As a result the maximum strength is realized at a relatively high temperature with a significant reduction in the time required for solution treatment [5], [6] The effect of β-iron intermetallic and porosity on the tensile properties in cast Al-Si-Cu and Al-Si-Mg alloys were investigated for this research study, The T7 heat-treated alloys display lower hardness values than those which were T6 heat-treated [7]. The mechanical properties of aluminium-silicon casting alloys containing Cu and Mg are known to be improved by heat treatment.…”