|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Metal-Matrix Composites: Advances in Processing, Characterization, Performance and Analysis
||Manufacturing of Nano-reinforced Aluminium Composites by a Combination of Stir Mixing, Ultrasonic Processing and High-pressure Die Casting
||Guangyu Liu, Mahfuz Karim, Dmitry Eskin, Brian McKay
|On-Site Speaker (Planned)
Due to their high specific strength, aluminum-based metal matrix nanocomposites reinforced with ceramics are an attractive proposition for applications in the transport sector. High Pressure Die Casting (HPDC) is a cost-effective manufacturing route for the mass production of aluminum castings exhibiting complex near-net-shape geometries. Through the application of high pressure and high cooling rates, improved distribution of the reinforcing particles compared to other casting methods can be attained. This is a result of the increased filling capacity of the composite melt and the resultant finer grain structure. In this study, an AlSi9Cu3 (LM24) commercial alloy was reinforced with SiC and Al2O3 nanoparticles. The reinforcement was introduced using novel Al-nanoSiC and Al-nanoAl2O3 alloys and processed using stir mixing, ultrasonic processing and HPDC technologies to achieve enhanced mechanical properties. The effect of the nanoparticles on the microstructure and the mechanical properties have been investigated and reported herein.