合金结构钢中尖晶石夹杂物生成的热力学研究

特殊钢 ›› 2008, Vol. 29 ›› Issue (1): 16-18.

合金结构钢中尖晶石夹杂物生成的热力学研究

姜敏，陈斌，杨文，王新华

北京科技大学冶金与生态工程学院，北京100083

出版日期:2008-02-01 发布日期:2022-12-13
作者简介:姜敏(1982-),男，在读博士研究生,北京科技大学毕业, 洁净钢与非金属夹杂控制。
基金资助:
“新一代”钢铁材料重大基础研究“973”项目 (2004C13619106)

A Study on Thermodynamics of Spinel Inclusions Formation in an Alloy Structural Steel

Jiang Min, Chen Bin, Yang Wen ，Wang Xinhua

School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083

Published:2008-02-01 Online:2022-12-13

摘要/Abstract

摘要： 试验研究了合金钢液(%:0.42C、1.15Cr、0.20Mo)-炉渣(CaO-SiO₂-Al₂O₃-MgO)平衡时,钢中MgO·Al2O3生成的热力学条件,并借助热力学计算得出MgO,MgO·Al₂O₃和Al₂O₃三相平衡及转变关系图。结果表明,当钢中[Al]为0.0001%时,若[Mg]≥2×10^-6%,则能生成MgO·Al₂O₃。试验钢液与炉渣平衡时[Mg]为0.0004%～0.0005%,[Al]为0.0045%～0.0060%,处于理论计算MgO·Al₂O₃生成区域,使钢中夹杂物主要为MgO·Al₂O₃。

关键词: 合金结构钢, 镁铝尖晶石, 热力学, 平衡

Abstract: The thermodynamic conditions of formation of MgO.Al₂O₃ in alloy steel (0. 42C, 1. 15Cr, 0. 20Mo) with liquid steel being in equilibrium with slag (CaO-SiO₂-Al₂O₃-MgO) has been tested and studied, and the diagram of MgO- MgO.Al₂ O₃-Al₂ O₃ three phases equilibrium and transformation relation has been obtained. Results showed that the MgO.Al₂ O₃ could formed in steel as [Al] was 0. 000 1% and [Mg] was N2 x IO^-6% . With test liquid steel being in equilibrium with slag, the [Mg] was 0. 000 4% ~ 0.000 5% and [Al] was 0. 004 5% ~ 0.006 0% which was in theory- calculated MgO.Al₂O₃ formation zone led to formation o£ main inclusion MgO.Al₂ O₃ in steel.

姜敏, 陈斌, 杨文, 王新华. 合金结构钢中尖晶石夹杂物生成的热力学研究[J]. 特殊钢, 2008, 29(1): 16-18.

Jiang Min, Chen Bin, Yang Wen, Wang Xinhua. A Study on Thermodynamics of Spinel Inclusions Formation in an Alloy Structural Steel[J]. Special Steel, 2008, 29(1): 16-18.

参考文献

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