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A high-temperature acoustic field measurement and analysis system for determining cavitation intensity in ultrasonically solidified metallic alloys.
Xu, Nanxuan; Yu, Yang; Zhai, Wei; Wang, Jianyuan; Wei, Bingbo.
Afiliación
  • Xu N; School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China.
  • Yu Y; School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China.
  • Zhai W; School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China.
  • Wang J; School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China. Electronic address: wangjy@nwpu.edu.cn.
  • Wei B; School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China.
Ultrason Sonochem ; 94: 106343, 2023 Mar.
Article en En | MEDLINE | ID: mdl-36858007
A high-temperature acoustic field measurement and analysis system (HTAFS) was self-designed and developed to achieve real-time acoustic field analysis and quantitative cavitation characterization within high-temperature liquids. The acoustic signal was acquired by a high-temperature resistant waveguide and calibrated by separate compensation of line and continuous spectra to eliminate frequency offsets. Moreover, a new method was proposed to derive from the continuous-spectrum sound intensity and line-spectrum sound intensity in the frequency band above 1.5 times the fundamental frequency to characterize the intensity of transient cavitation and stable cavitation. The acoustic field characteristics within solidifying liquid Al-7 %Si alloy were successfully determined by this system. With the increase of ultrasound amplitude, the acoustic pressure in the alloy melt increased to be stable, the transient cavitation intensity first rose and then declined, and the stable cavitation intensity remained unchanged. Combined with the structural evolution of the primary α(Al) phase, the transient cavitation intensity was determined to be the dominant factor for the ultrasound-induced grain refinement effect.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ultrason Sonochem Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2023 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ultrason Sonochem Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2023 Tipo del documento: Article Pais de publicación: Países Bajos