The effect of thermomechanical parameters on the eutectic silicon characteristics in a non-modified cast A356 aluminum alloy
作者： N. Haghdadi , A. Zarei-Hanzaki , H.R. Abedi , O. Sabokpa
DOI: 10.1016/J.MSEA.2012.04.010
关键词:
摘要: Abstract The influence of hot working parameters on the microstructural evolution cast A356 aluminum alloy has been studied emphasizing changes in eutectic phase morphology. Toward this end, a set isothermal compression tests were conducted temperature range 400–540 °C. results indicate that Si platelets are fragmented, spheroidized and also evenly distributed matrix as result applying proper thermomechanical cycles. mechanical fragmentation thermal disintegration play prominent role particles breaking up under different deformation conditions, whereas average particle size is decreased with decreasing increasing strain rate. lowest shape factor aspect ratio achieved for specimens deformed at higher temperatures lower rates. current work explores high flow behavior to address dominant restoration processes taken place conditions.
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