|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Late News Poster Session
||NOW ON-DEMAND ONLY - E-34: The Modification Effect of Ultrasonic Irradiation Amplitude during Melt Treatment on Al3Zr Compounds
||Jincheng Sun, Sergey Komarov, Takuya Yamamoto
|On-Site Speaker (Planned)
Recent trends in the aluminum industry toward increasing the recycling rate of aluminum alloys have led to difficulties in controlling the formation of intermetallic compounds. Recent investigations have revealed that ultrasonic irradiation is a promising tool to refine and modify the intermetallic compounds formed in the melt before or during casting, and the reported mechanisms include ultrasound-assisted nucleation and fragmentation of compounds. This work presents results concerning the modification effect of ultrasound on model Al3Zr compounds with emphasis on the effect of vibration amplitude. The results reveal that needle-like Al3Zr compounds can be significantly modified to more rounded shape when amplitude increases from 38Ám to 48Ám, and then remains unchangeable with the further increase of amplitude. Theoretical consideration and numerical simulation show that in addition to the above-mentioned mechanism, the ultrasound-driven mass and heat transfer play also an important role in the compound modification.
||Aluminum, Solidification, Recycling and Secondary Recovery