Studies on the influence of grain refining and modification on microstructure and mechanical properties of forged A356 alloy

Evaluating the mechanical properties of a thermomechanically processed unmodified A356 Al alloy employing shear punch testing method

“…They showed that the simultaneous presence of deformation and heat influences the morphology of the Si particles, thereby resulting in higher strength without sacrificing the ductility. In other investigations by Ding et al [22] and Mallapur et al [23], similar enhancements in the mechanical properties of an Al-12Si-0.2Mg alloy and an A356 Al alloy after hot extrusion and hot forging processes were reported, respectively.…”

“…Taking the disadvantages of the above-mentioned approaches into consideration, thermomechanical processing (TMP) has been put into practice by researchers as an alternative efficient method to control the morphology of the Si particles in the microstructure of the Al-Si alloys [19][20][21][22][23]. In this context, Zarei-Hanzaki et al [20] studied the room temperature mechanical characteristics of a Srmodified thixocast A356 Al alloy after hot compression.…”

Effects of in-situ γ-Al2O3 particles and heat treatment on the microstructure and mechanical properties of A356 aluminium alloy

“…Modification of eutectic Si can be achieved by different techniques such as adding modifiers or nucleation agents [7][8][9], melt superheating treatment [10,11], outfield treatment [12,13], rapid solidification [14], and friction stir processing (FSP) [15]. However, among the various methods, chemical modification via adding modifiers or nucleation agents into Al-Si alloys has been extensively used in conventional casting due to its effectiveness and simplicity.…”

Effect of mould sand type and casting wall thickness on properties and microstructure of multivariate Al–7·5Si–4Cu alloy

“…The modifying effects of modifiers are affected not only by modifying process (addition amount modifier, treating temperature and treating time) but also by the cooling conditions of casting (moulding material, wall thickness and pouring temperature). [4][5][6][7][8][9] In industrial practice, the pouring temperature is usually controlled. Thus, the cooling conditions of casting are mainly related to the moulding material and wall thickness.…”