Work

Effect of low-intensity ultrasound on grain refinement and heterogeneous nucleation mechanism of 2219 Al alloy

Year: 2025

Type: article

Abstract: ) for heterogeneous nucleation was determined. The calculation results are in good agreement with the experimental conclusions, thereby proposing a new mechanism for ultrasound to improve solidification microstructures. This work demonstrates that the ultrasonic cavitation and acoustic streaming are not necessary conditions for refining grain structures. Low-intensity ultrasound can also promote the refinement of Al alloy grain structures when satisfying the critical nucleation acoustic pressure conditions.

Source: Ultrasonics Sonochemistry

DOI: 10.1016/j.ultsonch.2025.107341

Authors: Anqing Li, Ripeng Jiang, Ruiqing Li, Aolei Fu, Li Zhang, Lihua Zhang

Institutions: Central South University, Zhengzhou University

Language: English

Topic: Aluminum Alloy Microstructure Properties

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,710

Funders: National Natural Science Foundation of China, Foundation for Innovative Research Groups of the National Natural Science Foundation of China