Ultrasound cavitation induced nucleation in metal solidification: An analytical model and validation by real-time experiments.

ABSTRACT: Microstructural refinement of metallic alloys via ultrasonic melt processing (USMP) is an environmentally friendly and promising method. However, so far there has been no report in open literature on how to predict the solidified microstructures and grain size based on the ultrasound processing parameters.In this paper, an analytical model is developed to calculate the cavitation enhanced undercooling and the USMP refined solidification microstructure and grain size for Al-Cu alloys. Ultrafast synchrotron X-ray imaging and tomography techniques were used to collect the real-time experimental data for validating the model and the calculated results. The comparison between modeling and experiments reveal that there exists an effective ultrasound input power intensity for maximizing the grain

SUBMITTER: Huang H 

PROVIDER: S-EPMC8633372 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature