Mechanical Properties of Al-Mg-Si/Groundnut Shell Particulate Composite Produced By Stir Casting Method

摘要

In this paper, some mechanical properties of a particulate strengthened Al-Mg-Si composite using groundnut shell particles in powdered and ash forms were investigated. Stir casting method was used to produce the alloy of Al-Mg-Si with 2, 4, 6, 8 and 10 % weight groundnut shell particulates. The miscrostructure of the various alloy particulate composites produced were examined while tensile, hardness and impact properties determined. The result obtained shows that hardness values increased with increase in the amount of groundnut shell particles with the best result of 44.5 HRB at 8 % weight groundnut shell ash particulates. The yield stren gth and ultimate tensile strength increased with increasing particulate addition with 47 kN/mm 2 at 10 % and 110 kN/mm 2 at 4 % a sh particulates respectively while the impact strength also showed similar trend. It was then concluded that hardness, tensile strength and impact strength of Al-Mg-Si alloy were enhanced by the addition of groundnut shell particulate using stir-casting method and thus can be used in automobile components such as wheels and engine cylinder blocks.