首页|稀土镧对Q450NQR1铁路车厢用钢中夹杂物生成的影响

稀土镧对Q450NQR1铁路车厢用钢中夹杂物生成的影响

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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.
Effects of Rare Earth Lanthanum on Formation of Inclusions in Q450NQR1 Steel for Railway Carriage
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 alumi-nate,oxide,carbide and sulfide of rare earth lanthanum were formed as well as lanthanum-silicon and lanthanum-alumi-num 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.

steel for railway carriagerare earth lanthanumGibbs free energy of reactionformation of inclusions

吴伟、赵博、杨峰、雷鸣、曾加庆、何建中、梁志刚

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钢铁研究总院有限公司冶金工艺研究所,北京 100081

内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010

内蒙古包钢钢联股份有限公司,内蒙古 包头 014010

铁路车厢用钢 稀土镧 反应吉布斯自由能 夹杂物生成

2024

包钢科技
内蒙古包钢钢联股份有限公司技术中心

包钢科技

影响因子:0.115
ISSN:1009-5438
年,卷(期):2024.50(4)