Concentration-Induced Convection in Reactive Wetting of Al–Mg-Mn Alloys by Zn-based Solders under Variable Gravity

IF 1.5 4区工程技术 Q2 ENGINEERING, AEROSPACE

Microgravity Science and Technology Pub Date : 2026-03-07 DOI:10.1007/s12217-026-10237-4

Svetlana A. Gruzd, Ilya R. Saltykov, Ilya V. Shutov, Dmitry S. Samsonov, Mikhail D. Krivilyov

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引用次数: 0

Abstract

Brazing of aluminum alloys using chemically active fillers is in demand in transportation and aerospace engineering for the development of new techniques suitable under microgravity conditions for outer space repair. This work presents a theoretical study of diffusion and hydrodynamic flows in molten Zn solder during the reactive wetting of an Al–Mg-Mn plate under various gravity conditions. The model is developed in the isothermal formulation at different wetting temperatures, considering the concentration-driven effect in the soldered zone. The influence of Marangoni convection caused by the Zn concentration gradient on the flow structure and erosion of the base material is analyzed. The effect of zinc evaporation during reactive wetting under vacuum conditions is revealed and quantitatively described. The dependency of the Zn solder droplet radius during its spreading on a flat Al–Mg-Mn plate under various external conditions is also analyzed.

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变重力下zn基钎料反应润湿Al-Mg-Mn合金的浓度诱导对流

利用化学活性填料钎焊铝合金是交通运输和航空航天工程开发适用于微重力条件下的外太空修复新技术的需求。本文对不同重力条件下Al-Mg-Mn板反应润湿过程中锌焊料的扩散和流体动力学流动进行了理论研究。该模型采用不同润湿温度下的等温公式，考虑了焊接区的浓度驱动效应。分析了锌浓度梯度引起的马兰戈尼对流对基材流动结构和侵蚀的影响。揭示并定量描述了真空条件下锌蒸发对反应润湿的影响。分析了不同外部条件下锌焊点在Al-Mg-Mn平板上扩散过程中焊点半径的变化规律。

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来源期刊

Microgravity Science and Technology 工程技术-工程：宇航

CiteScore

3.50

自引率

44.40%

发文量

期刊介绍： Microgravity Science and Technology – An International Journal for Microgravity and Space Exploration Related Research is a is a peer-reviewed scientific journal concerned with all topics, experimental as well as theoretical, related to research carried out under conditions of altered gravity. Microgravity Science and Technology publishes papers dealing with studies performed on and prepared for platforms that provide real microgravity conditions (such as drop towers, parabolic flights, sounding rockets, reentry capsules and orbiting platforms), and on ground-based facilities aiming to simulate microgravity conditions on earth (such as levitrons, clinostats, random positioning machines, bed rest facilities, and micro-scale or neutral buoyancy facilities) or providing artificial gravity conditions (such as centrifuges). Data from preparatory tests, hardware and instrumentation developments, lessons learnt as well as theoretical gravity-related considerations are welcome. Included science disciplines with gravity-related topics are: − materials science − fluid mechanics − process engineering − physics − chemistry − heat and mass transfer − gravitational biology − radiation biology − exobiology and astrobiology − human physiology