Fundamental studies of ultrasonic melt processing
Fundamental studies of ultrasonic melt processing
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DOI：
10.1016/j.ultsonch.2018.12.028
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发表时间：
2019-04-01
影响因子：
8.4
通讯作者：
Mi, J.
中科院分区：
文献类型：
--
作者：
Eskin, D. G.;Tzanakis, I.;Mi, J.
超声（空化）熔体加工作为一种有前途的途径，为金属铸造行业的一些核心问题提供清洁，环境友好和节能的解决方案，如提高熔体质量和提供组织细化，吸引了学术界和工业界的极大兴趣。在过去的5年里，作者使用最先进的独特设施和方法对空化熔体加工的基本机制进行了广泛的研究。本文综述了近年来在处理熔体的声压和熔体流动的评价，直接观察和定量分析的液体铝合金中的空化，原位和非原位的金属间化合物的成核，生长和破碎的研究，和颗粒的解聚。这些结果提供了有价值的新见解和知识，这对于将超声波熔融加工提升到工业水平至关重要。
Ultrasonic (cavitation) melt processing attracts considerable interest from both academic and industrial communities as a promising route to provide clean, environment friendly and energy efficient solutions for some of the core issues of the metal casting industry, such as improving melt quality and providing structure refinement. In the last 5 years, the authors undertook an extensive research programme into fundamental mechanisms of cavitation melt processing using state-of-the-art and unique facilities and methodologies. This overview summarises the recent results on the evaluation of acoustic pressure and melt flows in the treated melt, direct observations and quantitative analysis of cavitation in liquid aluminium alloys, in-situ and ex-situ studies of the nucleation, growth and fragmentation of intermetallics, and de-agglomeration of particles. These results provide valuable new insights and knowledge that are essential for upscaling ultrasonic melt processing to industrial level.