Effect of SiC Powder Addition on Air Jet Erosion of Metal Matrix Composite Al-SiC

• Main Author: LONGALAYUK (NIM : 13713033), MARDI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28743
• Institution: Institut Teknologi Bandung

<p align="justify"> <br /> <br /> In the aerospace and energy industry, working conditions in high-speed <br /> <br /> fluid with abrasive particles may result in erosion of the component. Metal Matrix <br /> <br /> Composite (MMC) Al-SiC was developed to be a solution in improving the <br /> <br /> lifetime of Aluminum used in such application. <br /> <br /> In this research, MMC Al-SiC has been made using Al-7075 base material <br /> <br /> with the addition of SiC powder grid 220 as much as 5, 10 and 15 wt%. This <br /> <br /> composite was manufactured using stir casting technique with the addition of 1 <br /> <br /> wt% magnesium (Mg). Characterization with optical metallography has been done <br /> <br /> to know the SiC distribution homogeneity of stir casting results. Air Jet Erosion <br /> <br /> testing was then performed to test the erosion resistance of the MMC. The impact <br /> <br /> of precipitation hardening on the Al-7075 matrix towards erosion resistance was <br /> <br /> also studied. <br /> <br /> Optical metallographic results show that MMC Al-SiC has been <br /> <br /> successfully manufactured although SiC particle distribution has not been fully <br /> <br /> homogeneous yet and porosity was still formed. Water Jet Erosion Test showed <br /> <br /> that the addition of 5% SiC was optimal in improving the erosion resistance of <br /> <br /> MMC Al-SiC. Addition of more than 5% SiC did not significantly improve its <br /> <br /> erosion resistance. Solution treatment and artificial aging for precipitation <br /> <br /> hardening on Al-7075 matrix proven to decrease its erosion resistance. <br /> <p align="justify">