The Characteristics of Aluminum AC4B Composites Reinforced by the Fraction Volume Variations of Boron Carbide Through the Stir Casting Process
Adinda Dita Dwi Lestari (a*) and Anne Zulfia Syahrial (b*)
a) Metallurgy and Materials Engineering, Universitas Indonesia, Jalan Kampus UI, Depok 16424, Indonesia
*adinda.dita[at]ui.ac.id
b) Metallurgy and Materials Engineering, Universitas Indonesia, Jalan Kampus UI, Depok 16424, Indonesia
*anne[at]metal.ui.ac.id
Abstract
The fabrication and research of Aluminum AC4B matrix composites with the addition of Boron Carbide (B4C) reinforce was carried out with the aim of knowing its mechanical properties difference due to its toughness, good impact resistance, and high strength properties. In this fabrication and research, Aluminum AC4B act as the matrix in the composites which is given a variation of B4C reinforcement particle of 1 ; 3 ; 5 %Vf and also followed by the addition of 5 %wt Magnesium (Mg) as the wetting agent, 0.04 %wt Stronsium (Sr) as the modifier, and 0.15 %wt Al-5Ti-1B as the grain reinforcement through the stir casting process. To characterize each composites, two types of testing methods are carried out namely the destructive testing (such as tensile, hardness, impact, and ballistic testing) and the non-destructive testing (such as porosity and density, Optical Microscope (OM), Scanning Electron Microscope (SEM) and Dispersive X-Ray Spectroscopy (EDX), and X-Ray Diffraction (XRD) testing). The mechanical properties difference of each composite is related to the interface bond between the matrix and the reinforcement added to the composites as the use of B4C reinforcement particle increase, so that it could produce high toughness, impact resistance, and strength.
Keywords: Aluminum composites; Boron carbide; AC4B; Stir casting
Topic: Metallurgy Engineering