摘要
文章通过采用感应炉试验和热力学计算研究钢中镧元素含量对钢中夹杂物的影响,得出在Q450NQR1铁路车厢用钢的钢液热力学条件下,首先形成的是稀土硫氧化物,然后是稀土镧的铝酸盐、氧化物、碳化物、硫化物,最后是反应趋势较小的镧-硅和镧-铝金属间化合物以及稀土氢化物。通过Ohnaka偏析模型的计算得出,LaAs和LaP夹杂物可以在凝固过程中产生。
In this paper,the effects of lanthanum content on inclusions in steel are studied by the induction furnace experiment and thermodynamic calculations.It was concluded that the rare earth oxysulfide was formed firstly,then aluminate,oxide,carbide and sulfide of rare earth lanthanum were formed as well as lanthanum-silicon and lanthanum-aluminum intermetallic compounds and rare earth hydride with smaller reaction trend were formed finally under the thermodynamic condition of molten steel of Q450NQR1 steel for railway carriage.It is obtained that the inclusions of LaAs and LaP could be generated during solidification process through the calculations with Ohnaka segregation model.
作者
吴伟
赵博
杨峰
雷鸣
曾加庆
何建中
梁志刚
Wu Wei;Zhao Bo;Yang Feng;Lei Ming;Zeng Jia-qing;He Jian-zhong;Liang Zhi-gang(Metallurgical Technology Institute of Central Iron and Steel ResearchInstitute Co.,Ltd.,Beijing 100081,China;Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner MongoliaAutonomous Region,China)
出处
《包钢科技》
2024年第4期54-59,共6页
Science & Technology of Baotou Steel
关键词
铁路车厢用钢
稀土镧
反应吉布斯自由能
夹杂物生成
steel for railway carriage
rare earth lanthanum
Gibbs free energy of reaction
formation of inclusions
