Study on Structural Variation of Sn–20% Pb Alloy Melt Subjected to Ultrasonic Vibration: An Electrical Characterization

IF 3.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2024-03-29 DOI:10.1007/s12540-024-01661-5

Zhaoyang Yin, Qichi Le, Weiyang Zhou, Liang Ren, Jianfeng Zhang, Qiyu Liao, Tong Wang

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Abstract

The electrical resistance variation of the Sn–20% Pb alloy melt subjected to ultrasonic vibration was investigated using four-electrode method. The modified energy band theory and cavitation dynamics simulation were employed to explain the experimental results. The ultrasonic vibration in the liquid disrupted the melt structure and enhanced the forced vibration of the atoms, resulting in a reversible liquid–liquid structural transformation and a sharp decrease in electrical resistance. The evolution of the optical microstructure suggested that the ultrasonic-induced refining and homogenizing effects of short-range ordered structures were time-sensitive. The numerical simulation of cavitation dynamics indicated that the structural variation was the substantial root for the electrical resistance change by ultrasonic irradiation, and the high energy required for the reversible structural variation was provided by the collapsing cavities.

Graphical Abstract

Abstract Image

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受超声波振动影响的 Sn-20% Pb 合金熔体的结构变化研究：电特性分析

采用四电极法研究了锡-20% 铅合金熔体在超声波振动下的电阻变化。采用修正能带理论和空化动力学模拟来解释实验结果。液体中的超声波振动破坏了熔体结构，增强了原子的受迫振动，导致了可逆的液-液结构转变和电阻的急剧下降。光学微观结构的演变表明，超声波引起的短程有序结构的细化和均匀化效应具有时间敏感性。空化动力学数值模拟表明，结构变化是超声波辐照导致电阻变化的实质根源，而可逆结构变化所需的高能量则由塌陷空腔提供。

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.