Optimization of the squeeze cast Y2O3 Al-Si composites by merit rating method

Abstract EN

In this paper, Y2O3/Al–Si composites are prepared by squeeze casting process and merit rating method is used to optimize the squeeze casting process parameters.

A wear rate and hardness tests were conducted and the density is calculated for the resulted castings.

The primary objective is to use merit rating method to find a better group of parameters that give the good balance of high density and hardness with low wear rate.

The evaluated squeeze casting parameters are pouring temperature, die temperature, and squeeze pressure.

The experimental and analytical results showed that the merit rating method was successful in determining the group of parameters that give an optimum balance of properties.

Also it showed that if the difference in any property values among specimens is high, it can affect the selection process with the importance sequence.