Synergistic enhancement of Al-Si7Mg alloy: Strengthening mechanical properties through combined electromagnetic agitation and AL-10%Ti refinement
Fig 8
The optical micrograph of the specimens that are subjected to an electromagnetic field (EMF) at 220V.
It is evident that the size of the grains has decreased, and a close grain is visible in the image. Al-Si-alloy microstructures are made up of an aluminium matrix reinforced by Si precipitates, as well as a mixture of Fe-rich intermetallic and eutectic silicon particles. Micrograph of specimens subjected to an electromagnetic field (EMF) at 50V shows that, with the use of a refiner (AL-10%Ti), the grain size is reduced and a close grain structure is observed. (a) sample subjected to EMF at 50Volts. (b) with refiner (Al-10%Ti) subjected to EMF at 50Volts. The optical micrograph of the specimens that are subjected to an electromagnetic field (EMF) at 100V, the size of the grain is decreased, and the grain is noted to be close together. It is evident from the optical micrograph of the specimens exposed to an electromagnetic field (EMF) at 100 volts that the refiner (AL-10%Ti) reduces grain size and produces a close-grained structure. (c) subjected to EMF at 100Volts. (d) with refiner (Al-10%Ti) subjected to EMF at 100Volts. Optical micrograph of specimens subjected to an electromagnetic field (EMF) at 120V, with a refiner (AL-10%Ti). The grain size decreases, and close grains can be observed. (e) subjected to EMF at 120Volts. (f) with refiner (Al-10%Ti) subjected to EMF at 120Volts. The optical micrograph of specimens subjected to an electromagnetic field (EMF) at 140V shows that, with the refiner (AL-10%Ti), the grain size is reduced and a close grain structure is observed. (g) subjected to EMF at 140Volts. (h) with refiner (Al-10%Ti) subjected to EMF at 140Volts. The optical micrograph of specimens subjected to an electromagnetic field (EMF) at 160V shows that, with the refiner (AL-10%Ti), the size of the grains is decreased, and a close grain structure is visible in the image. (i) subjected to EMF at 160Volts. (j) with refiner (Al-10%Ti) subjected to EMF at 160Volts. The optical micrograph of the specimens that are subjected to an electromagnetic field (EMF) at 180V. It can be observed that there is a decrease in grain size and a tight grain structure. (k) subjected to EMF at 180Volts. (l) with refiner (Al-10%Ti) subjected to EMF at 180Volts. The optical micrograph of the specimens that are subjected to an electromagnetic field (EMF) at 200V. There is a decrease in grain size, accompanied by a tight grain structure. (m) subjected to EMF at 200Volts. (n) with refiner (Al-10%Ti) subjected to EMF at 200Volts. (o) subjected to EMF at 220Volts. (p) with refiner (Al-10%Ti) subjected to EMF at 220Volts.