|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Metal-Matrix Composites: Advances in Processing, Characterization, Performance and Analysis
||NOW ON-DEMAND ONLY – Wettability of High Pressure Die Cast Aluminium Alloy on SiC and Al2O3 with the Influence of Surfactants
||Mahfuz Karim, Guangyu Liu, Brian McKay, Dmitry Eskin
|On-Site Speaker (Planned)
Replacing components with a substitute lightweight metal matrix composite (MMC) material is a rising trend in the automotive and aerospace industry. The key issue affecting the repeatability and upscaling of the manufacturing process is the poor wettability of reinforcement material with the metal matrix, which subsequently affects the particle distribution and porosity. The wettability of ceramic reinforcement material (SiC and Al2O3) by a high pressure die cast (HPDC) aluminium alloy is investigated at typical casting temperature (680-700oC) by a sessile drop method. Molten drops of alloys are deposited on to reinforcement substrate surface and the contact angle is measured to determine the wettability. Modification to alloy composition is made to produce the best wetting behaviour with the reinforcement material whilst maintaining HPDC alloys criteria. The surfactant addition of Mg, Cu, Bi, Zr and Zn, which lower the surface tension, are assessed to improve the wettability of alloy with the reinforcement.