Sb effect on micro structural and mechanical properties of rapidly solidified Al–12Si alloy

Structure and properties of nanostructured A357 alloy produced by melt spinning compared with direct chill ingot

“…The fine equiaxed cells grains with sizes in the range of 0.4-0.7 m were observed in melt-spun A359 ribbon, and the improvement in hardness and tensile properties are related to supersaturated ␣-Al solid solution and the structural refinement [11]. The microstructure of a rapidly solidified Al-12 wt.% Si ribbon shows a featureless zone along the wheel-side of the ribbon besides a cellular structure and 0.5 wt.% Sb addition refines the microstructure whereas 1.0 wt.% Sb addition lead to the formation of coarse Si particles [12,13].…”

Effect of Rapid Solidification and Addition of Cu3P on the Mechanical Properties of Hypereutectic Al-Si Alloys

“…The addition of phosphorus compounds is one of the best ways to produce fine particles of primary Si with beneficial shape and uniform distribution [6][7][8] . The rapid solidification is another important way to refine not only the primary Si but also the grain size of aluminum matrix and all coexisting phases in the microstructure 9 . In addition to the solutions described above, the mechanical properties of the as-cast Al-Si alloys can be improved by additional heat treatments that increase the strength of soft matrix and decrease the risk of brittle fracture 10, 11 .…”

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

“…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. It was reported that chemical elements of strontium (Sr), sodium (Na) and antimony (Sb) have been successfully used to modify eutectic Si structure in hypoeutectic or eutectic Al-Si alloys [16][17][18]. The elements strontium and sodium modify eutectic Si from coarse needle-like or flake-like morphology to fine coral-like fibrous structure.…”