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

Haijun Huang; Ling Qin; Haibin Tang; Da Shu; Wentao Yan; Baode Sun; Jiawei Mi

Ultrasonics Sonochemistry (Dec 2021)

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

Haijun Huang,
Ling Qin,
Haibin Tang,
Da Shu,
Wentao Yan,
Baode Sun,
Jiawei Mi

Affiliations

Haijun Huang: School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
Ling Qin: Department of Engineering, University of Hull, HU6 7RX, UK
Haibin Tang: School of Intelligent Manufacturing, Nanjing University of Science & Technology, Nanjing 210094, China; Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
Da Shu: Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors at: School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China (D. Shu); Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore (W. Yan); Department of Engineering, University of Hull, HU6 7RX, UK (J. Mi).
Wentao Yan: Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore; NUS Research Institute (NUSRI), Suzhou, Jiangsu 215123, China; Corresponding authors at: School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China (D. Shu); Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore (W. Yan); Department of Engineering, University of Hull, HU6 7RX, UK (J. Mi).
Baode Sun: Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Jiawei Mi: Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Engineering, University of Hull, HU6 7RX, UK; Corresponding authors at: School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China (D. Shu); Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore (W. Yan); Department of Engineering, University of Hull, HU6 7RX, UK (J. Mi).

Journal volume & issue: Vol. 80
p. 105832

Abstract

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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 refinement effects for the Al-Cu alloys, which is in the range of 20-45 MW/m2. In addition, a monotonous increase in temperature during USMP has negative effect on producing new nuclei, deteriorating the benefit of microstructure refinement due to the application of ultrasound.

Published in Ultrasonics Sonochemistry

ISSN: 1350-4177 (Print); 1873-2828 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry; Science: Physics: Acoustics. Sound
Website: https://www.journals.elsevier.com/ultrasonics-sonochemistry

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