Studies on Microstructural and Tensile Behavior of Aluminium Metal Matrix Composites with Addition of SiC_p and Coconut Shell Ash by Squeeze Casting Method

M.Arulraj ； P.K.Palani ； S.Vijayan ； T.Pugalenthi

《中國機械工程學刊》 41卷5期 (2020/10) Pp. 663-670

摘要

This experimental study focuses on processing of hybrid metal matrix (LM24-SiCp-coconut shell ash) composite for making castings through squeeze casting process. The primary objective was to analyze the influence of the process parameters namely reinforcement percentage, pouring temperature, squeeze pressure and mould temperature on response. Samples were cast for each experimental condition based on L9(34) orthogonal array. From ANOVA, it was observed that reinforcement percentage and squeeze pressure were the process parameters making a noticeable improvement in tensile strength. Scanning electron microscopy studies were carried on the fractured tensile test specimen to analyze the fracture mechanism.

關鍵字

LM24 aluminium alloy ； silicon carbide ； coconut shell ash ； squeeze casting ； Taguchi method ； genetic algorithm