Effect of ultrasonic cavitation on grain growth of ceramic tool materials

LI Dong-xu; SONG Jin-peng; GAO Jiao-jiao; LÜ Ming

doi:10.19591/j.cnki.cn11-1974/tf.2020020005

Volume 39 Issue 4

Aug. 2021

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Powder Metallurgy Technology > 2021 > 39(4): 332-338. > DOI: 10.19591/j.cnki.cn11-1974/tf.2020020005

LI Dong-xu, SONG Jin-peng, GAO Jiao-jiao, LÜ Ming. Effect of ultrasonic cavitation on grain growth of ceramic tool materials[J]. Powder Metallurgy Technology, 2021, 39(4): 332-338. DOI: 10.19591/j.cnki.cn11-1974/tf.2020020005

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Effect of ultrasonic cavitation on grain growth of ceramic tool materials

LI Dong-xu^{1, 2},
SONG Jin-peng^{1, 2, ,},
GAO Jiao-jiao^{1, 2},
LÜ Ming^{1, 2}

1.
College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Shanxi Key Laboratory of Precision Machining, Taiyuan University of Technology, Taiyuan 030024, China

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Corresponding author:
SONG Jin-peng, E-mail: songjinpeng@tyut.edu.cn
Received Date: February 14, 2020
Available Online: July 19, 2021

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Abstract

To investigate the effect of the ultrasonic cavitation on the grain growth of the ceramic tool materials during the ultrasonic pressureless sintering, the cavitation effect of bubbles in the molten metals was studied, the grain model containing the cavitation bubbles was established, and the grain growth process without and with ultrasound was simulated by Monte Carlo method. The results show that, the threshold of sound pressure is 8.02×10⁶ Pa and the threshold frequency is 2.00×10⁶ Hz when the radius of the cavitation bubble is between 1 μm and 2 μm. Furthermore, the ultrasonic cavitation can increase the vibration frequency and vibration energy of the lattice, which hinders the growth of the crystal grains, refines the grains, and reduces the pore size.
- ceramic tool materials,
- ultrasonic cavitation,
- microstructure,
- Monte Carlo method,
- pressureless sintering

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