中高锰钢在真空精炼过程中的气化行为

特殊钢 ›› 2018, Vol. 39 ›› Issue (4): 17-19.

中高锰钢在真空精炼过程中的气化行为

孔令种，邓志银，朱苗勇

东北大学冶金学院，沈阳110819

收稿日期:2018-03-09 出版日期:2018-08-01 发布日期:2022-05-31
作者简介:孔令种（1986-），男,博士生（2013年东北大学）,2010年重庆科技学院（本科）毕业，洁净钢髙效化精炼研究。
基金资助:
国家863计划重大课题：海洋平台用高镒高强韧中厚板及“钛/钢”复合板研究与生产技术开发 (2015AA03A501)；
国家自然科学基金重点项目：高锰高铝钢高效连铸结晶器专用保护渣应用基础研究 (U1660204)资助

Vaporization Behaviors of Manganese in Medium and High Mn Steel Grades during Vacuum Treatment

Kong Lingzhong, Deng Zhiyin ， Zhu Miaoyong

School of Metallurgy, Northeastern University, Shenyang 110819

Received:2018-03-09 Published:2018-08-01 Online:2022-05-31

摘要/Abstract

摘要： 为了解释中高锰钢真空精炼过程中Mn的非氧化损失行为,进行了工业实验和热力学计算。研究结果表明,在真空条件下钢液中Mn会因气化而大量挥发损失。温度、钢中Mn含量以及精炼真空度对Mn的气化挥发行为有着很大的影响。随着温度的升高和钢液中Mn含量的增加,Mn在气相中的饱和蒸气压增加,Mn的气化挥发变得更加容易。同等条件下,真空度越低,钢液中的Mn越容易气化。在VD和RH真空精炼条件下,Mn在钢液中的传质不应是决定Mn气化挥发速率的限制性环节。

关键词: 中锰钢, 高锰钢, 气化挥发, 二次精炼, 真空处理

Abstract: In order to understand the vaporization behaviors of Mn in medium and high Mn steel grades during vacuum treatment, industrial experiments and thermodynamic calculations were carried out. The results indicate that Mn vaporization would lead to an obvious loss of Mn in steel, and the vaporization is strongly influenced by the steel temperature, Mn content and vacuum pressure. With the increase of temperature and Mn content in steel, the saturated vapor pressure of Mn increases, leading to an increasing vaporization of manganese. Meanwhile, lower vacuum pressure would also result in a stronger vaporization of dissolved Mn into gaseous Mn. The mass transfer of Mn in liquid steel would not be the controlling step of the vaporization process of Mn during VD and RH vacuum treatment.

孔令种, 邓志银, 朱苗勇. 中高锰钢在真空精炼过程中的气化行为[J]. 特殊钢, 2018, 39(4): 17-19.

Kong Lingzhong, Deng Zhiyin , Zhu Miaoyong. Vaporization Behaviors of Manganese in Medium and High Mn Steel Grades during Vacuum Treatment[J]. Special Steel, 2018, 39(4): 17-19.

参考文献

[1]宋仁伯，冯一帆,彭世广，等.高锰钢衬板的研究及应用[J].材料导报,2015,29(19)； 74-78.
[2]罗治平，陶佑卿,陈成潢.高锰无磁钢经循环变形后的微观结构[J].西南交通大学学报,1993,28(2)： 47-51.
[3]张淑娟，丁桦，丁昊，等.23.8%MnTRIP/TWIP钢的组织性能及强化机制[J] .材料与冶金学报,2009,8(3)： 198-201.
[4]Aydin H, Essadiqi E and Jung I H,et al. Development of 3rd Generation AHSS with Medium Mn Content Alloying Compositions [J]. Materials Science & Engineering A,2013,564(3) ：501-508.
[5]Grassel 0,Kriiger L and Frommeyer G,et al. High Strength Fe-Mn- (Al, Si) TRIP/TWIP Steels Development-Properties-Application [J]. International Journal of Plasticity,2000,16(10) ：1391-1409.
[6]Han D K, Yong M K and Han H N,et al. Hydrogen and Aluminium in High-Manganese Twinning-Induced Plasticity Steel [J]. Scripta Materialia,2014,80(2) ：9-12.
[7]Kim D J and Park J H. Inteifacial Reaction Between CaO-SiO₂-MgO- A1₂O₃ Flux and Fe-xMn-yAl (x = 10 and 20 mass pct, y = 1, 3, and 6 mass pct) Steel at 1 873 K (1 600℃ )[J] , Metallurgical and Materials Transactions B,2012,43(4) ：875-886. [8] Kong L Z, Zhu M Y and Cai Z Z,et al. Study on Reaction Behavior Between Medium Manganese Steel and Molten Slag [A] 〃 ICAS 2016 & HMnS 2016 [C] , Chengdu: Chinese Society for Metals, 2016,317-320.
[9]梁英教，车荫昌.无机物热力学数据手册[M].沈阳:东北大学出版社,1993.
[10]Wagner C. The Activity Coefficient of Oxygen and Other Nonmetallic Elements in Binary Liquied Alloys as a Function of Alloy Com- position[J]. Acta MetaUurgica,1973,21（9）：1297-1303.
[11] Suito H and Inoue R. Thermodynamics on Control of Inclusions Composition in Ultraclean Steels [J]. ISIJ International, 1996,36 (5) ：528-536.