Thermodynamic substantiation of compositions of silicon aluminium alloys with increased aluminium content in Fe-Si-Al system

نویسندگان

چکیده

A priority direction of ferrous metallurgy development is to increase in output the high quality metal and products new assortment. One methods improve a steels involve complex alloys based on aluminum, silicon, manganese, etc. for their output. They are necessary as deoxidizing agents alloying additives. This paper considers possibility thermodynamic substantiation aluminum solubility ferrosilicon-aluminum alloy (FeSiAl) basis phase diagrams using osmotic coefficient Bjerrum-Guggenheim. Methodology used theoretical studies equilibria Bjerrum-Guggenheim concept. It includes set computer programs C# language (C sharp) designed evaluate deviation scope properties real system from ideal one. Criterion evaluation an The pattern change ratio activity components liquid solid phases (positive Фi <1 or negative >1) under boundary forming conditions crystallization regions related melting processes direct proof use it reducing agent. calculated mathematical dependences permit us determine temperature alloy. process with rich content observed at this temperature. dependence crystallizing component its demonstrated that rise leads strong deviations silicon properties, thus good mixability melt iron aluminum. Compositions silicon-aluminum were determined 12-37%, 20-25% 68-38%. received results which give maximum possible assimilation melts supplied high-ash coal ore-thermal furnaces. Thus method develop technology alloys.

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ژورنال

عنوان ژورنال: ??????????? ????????????? ???????????? ?????

سال: 2022

ISSN: ['2224-5243', '2616-6445']

DOI: https://doi.org/10.31643/2022/6445.15