The present work encompasses the development of microstructure by using cooling
plate casting process. This process consists of pouring the molten metal at temperature
close to the liquidus line in an inclined cooling plate. The mould and the slope plate unit
were manufactured by the researcher. Pouring temperature and inclination angles have
effect on microstructure, tensile strength, and on the macro hardness for both Al-
1.6%Mg, Al-0.46%Mg.
The following variables have been used in this work: pouring temperatures of
(750,800,850ᵒC), tilt angles of (30ᵒ
, 40ᵒ
, 50ᵒ
and 60ᵒ
), and Mg additive of (1.6%, 0.46%)
with constant cooling length (380mm). Tensile results reveal that (750,800 and 850ᵒC)
especially for (30ᵒ
, 40ᵒ
, 50ᵒ
) for 1.6%-Mg, and 0.46%Mg have a high value. Vickers
macro hardness has a gradual increasing value for Al-0.46%Mg, but for Al-1.6%Mg
rheocast alloy it has a fluctuated value, the higher value is for small angles (30ᵒ , 40ᵒ, and 50ᵒ) and small value for high angle (60ᵒ).
Keywords: Aluminum alloy,Al-Mg alloy, Rheocasting process.
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