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

姜敏; 陈斌; 杨文; 王新华

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

更新时间：2026-01-21

- A Study on Thermodynamics of Spinel Inclusions Formation in an Alloy Structural Steel
- Special Steel Vol. 29, Issue 1, Pages: 16-18(2008)
- 作者机构：
  
  北京科技大学冶金与生态工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：13 December 2022，
  
  Published：13 December 2008
- 稿件说明：
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姜敏, 陈斌, 杨文, et al. A Study on Thermodynamics of Spinel Inclusions Formation in an Alloy Structural Steel[J]. Special Steel, 2008, 29(1): 16-18.
DOI：

姜敏, 陈斌, 杨文, et al. A Study on Thermodynamics of Spinel Inclusions Formation in an Alloy Structural Steel[J]. Special Steel, 2008, 29(1): 16-18. DOI：

摘要

试验研究了合金钢液(%:0.42C、1.15Cr、0.20Mo)-炉渣(CaO-SiO

-Al

-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·Al

和Al

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·Al

。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·Al

生成区域

使钢中夹杂物主要为MgO·Al

。

Abstract

The thermodynamic conditions of formation of MgO.Al

in alloy steel (0. 42C

1. 15Cr

0. 20Mo) with liquid steel being in equilibrium with slag (CaO-SiO

-Al

-MgO) has been tested and studied

and the diagram of MgO- MgO.Al

-A

three phases equilibrium and transformation relation has been obtained. Results showed that the MgO.Al

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.Al

formation zone led to formation o£

main inclusion MgO.Al

in steel.

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