通过热力学计算,得出了硅脱氧430不锈钢熔体Fe-Mg-Al-Si-O体系MgO·Al2O3、2MgO·SiO2、3Al2O3·2SiO2和ZMgO·2Al2O3·5SiO2的平衡相图,分析了控制尖晶石夹杂物形成与转变的热力学条件.结果表明:1 873 K时,当钢中Al的质量分数在1×10-6以下,钢水中基本不形成镁铝尖晶石;随钢水中溶解铝含量的逐渐降低,由尖晶石转变为2MgO·SiO2所需的溶解氧质量分数逐渐提高.当钢水中溶解镁的质量分数在2×10-6,控制钢水中w(Al)＜4×10-5、w(O)＜8×10-6时,对于抑制不锈钢尖晶石夹杂物的形成有利.
参考文献
| [1] | G.Okuyama;S.Takeuchi .Effect of slag composition on the kinetics of formation of Al_2O_3-MgO inclusions in aluminum killed ferritic stainless steel[J].ISIJ International,2000(2):121-128. |
| [2] | H. KRAWIEC;V. VIGNAL;O. HEINTZ .Dissolution of Chromium-Enriched Inclusions and Pitting Corrosion of Resulfurized Stainless Steels[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2006(5):1541-1549. |
| [3] | Kanae uzuki;Shiro Ban-Ya;Mitsutaka Hino .Deoxidation Equilibrium of Chromium Stainless Steel with Si at the Temperatures from 1 823 to 1 923 K[J].ISIJ International,2001(8):813-817. |
| [4] | Kanae SUZUKI;Shiro BAN-YA;Mitsutaka HINO .Deoxidation Equilibrium of Cr-Ni Stainless Steel with Si at the Temperatures from 1823 to 1923 K[J].ISIJ International,2002(2):146-149. |
| [5] | Park, JH .Thermodynamic investigation on the formation of inclusions containing MgAl2O4 spinel during 16Cr-14Ni austenitic stainless steel manufacturing processes[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):43-51. |
| [6] | Woo-Yeol CHA;Dong-Sik KIM;Yong-Deuk LEE .A Thermodynamic Study on the Inclusion Formation In Ferritic Stainless Steel Melt[J].ISIJ International,2004(7):1134-1139. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%