{"title":"Enhanced Particle Dispersion in Aluminum Melts Using Multi-source Ultrasonic Vibration: Simulation and Experiments","authors":"Yeliang Zhu, Xiaogang Fang, Shulin Lv, Shusen Wu, Shifeng Luo, Siliang Yan, Jiguang Liu, Youwen Yang, Yiqing Chen","doi":"10.1007/s40962-024-01419-0","DOIUrl":null,"url":null,"abstract":"<p>Due to severe acoustic attenuation, the effectiveness of single-source ultrasonic vibration (SUV) in dispersing reinforcement particles within Al matrix composites is limited, particularly when dealing with high weight fractions. In this study, a short-spacing multi-source ultrasonic vibration (MUV) technique, specifically quad-source ultrasonic vibration (QUV), was introduced to prepare SiC<sub>p</sub>/A356 composites with a high weight fraction of 15wt.% SiC particles. The characteristic of acoustic streaming and the dispersion of particles were systematically investigated through numerical simulations and physical experiments. The results reveal that QUV mitigates acoustic attenuation and expands the potential cavitation region (exceeding the cavitation threshold of 1.1 MPa) compared to single-source ultrasonic vibration (SUV). The synergistic effect of multiple ultrasonic waves not only elevates cavitation intensity but also enriches the structures of acoustic streaming, significantly reducing agglomeration and improving the dispersion of SiC particles within the Al matrix. Without ultrasonic treatment, only a small proportion of SiC particles are embedded in the Al matrix, with an S<sub>SiC</sub>/S<sub>t</sub> ratio of merely 2.23%. However, as the number of ultrasonic sources increases, the agglomeration of SiC particles was relieved, and the resultant holes diminish. Remarkably, under QUV treatment, the holes in the composites virtually disappear, and the S<sub>SiC</sub>/S<sub>t</sub> ratio increases to 9.82%. Additionally, the composites exhibit superior mechanical properties, with a tensile strength of 200 MPa and an elongation of 7.0%, which are 10.5% and 38.5% higher than those achieved using SUV, respectively.</p>","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Metalcasting","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s40962-024-01419-0","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
Due to severe acoustic attenuation, the effectiveness of single-source ultrasonic vibration (SUV) in dispersing reinforcement particles within Al matrix composites is limited, particularly when dealing with high weight fractions. In this study, a short-spacing multi-source ultrasonic vibration (MUV) technique, specifically quad-source ultrasonic vibration (QUV), was introduced to prepare SiCp/A356 composites with a high weight fraction of 15wt.% SiC particles. The characteristic of acoustic streaming and the dispersion of particles were systematically investigated through numerical simulations and physical experiments. The results reveal that QUV mitigates acoustic attenuation and expands the potential cavitation region (exceeding the cavitation threshold of 1.1 MPa) compared to single-source ultrasonic vibration (SUV). The synergistic effect of multiple ultrasonic waves not only elevates cavitation intensity but also enriches the structures of acoustic streaming, significantly reducing agglomeration and improving the dispersion of SiC particles within the Al matrix. Without ultrasonic treatment, only a small proportion of SiC particles are embedded in the Al matrix, with an SSiC/St ratio of merely 2.23%. However, as the number of ultrasonic sources increases, the agglomeration of SiC particles was relieved, and the resultant holes diminish. Remarkably, under QUV treatment, the holes in the composites virtually disappear, and the SSiC/St ratio increases to 9.82%. Additionally, the composites exhibit superior mechanical properties, with a tensile strength of 200 MPa and an elongation of 7.0%, which are 10.5% and 38.5% higher than those achieved using SUV, respectively.
期刊介绍:
The International Journal of Metalcasting is dedicated to leading the transfer of research and technology for the global metalcasting industry. The quarterly publication keeps the latest developments in metalcasting research and technology in front of the scientific leaders in our global industry throughout the year. All papers published in the the journal are approved after a rigorous peer review process. The editorial peer review board represents three international metalcasting groups: academia (metalcasting professors), science and research (personnel from national labs, research and scientific institutions), and industry (leading technical personnel from metalcasting facilities).