锶在液态sr改性Al-7Si合金中的活度

IF 1.3 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Cast Metals Research Pub Date : 2023-03-11 DOI:10.1080/13640461.2023.2186567

S. M. Miresmaeili, B. Nami, I. Khoubrou

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引用次数: 1

摘要

摘要在本研究中，通过数值热力学分析，确定了在725–730°C下溶解在液态Al-7Si合金中的锶的亨利活度系数为10−2。通过对溶解元素在Al-7Si合金熔体中反应生成Sr（OH）2和SrH2化合物的认识，分析了它们的形成过程。结果表明，在不同温度下，合金熔体中Sr（OH）2和SrH2形成反应的自由能为正，表明这些化合物可能不会在液态铝合金中形成。

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Activity of strontium in liquid Sr-modified Al-7Si alloy

ABSTRACT In the present study, the Henrian activity coefficient of strontium , dissolved in liquid Al-7Si alloy at 725–730°C has been determined to be in the order of 10−2, using the numerical thermodynamic analyses. By knowing the , formation of the compounds, Sr(OH)2 and SrH2 through the reaction of dissolved elements in Al-7Si alloy melt has been analysed. The results indicated that the free energy of the formation reaction of Sr(OH)2 and SrH2 in the alloy melt are positive at different temperatures, showing that these compounds may not be formed in the liquid aluminium alloys.

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来源期刊

International Journal of Cast Metals Research 工程技术-冶金工程

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

7.5 months

期刊介绍： The International Journal of Cast Metals Research is devoted to the dissemination of peer reviewed information on the science and engineering of cast metals, solidification and casting processes. Assured production of high integrity castings requires an integrated approach that optimises casting, mould and gating design; mould materials and binders; alloy composition and microstructure; metal melting, modification and handling; dimensional control; and finishing and post-treatment of the casting. The Journal reports advances in both the fundamental science and materials and production engineering contributing to the successful manufacture of fit for purpose castings.