Aggregation of CeAlO3 inclusions in heavy ingot of a steel containing 0.007％ aluminum

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外文摘要：The distribution of inclusions at the bottom of a Ce-treated heavy steel ingot was detected and calculated.The three-dimensional morphology and spatial distribution of CeAlO3 clusters were characterized using the electrolytic extraction and Micro-CT detection.A model of inclusion collision to predict the aggregation of CeAlO3 inclusions in the ingot was established and validated by measured results.Inclusions were mainly CeAlO3 and a small amount of Ce2O2S in the tundish after cerium treatment.The collision and aggregation of inclusions led to the formation of large clusters in the ingot during the solidification process.Large slag entrainment inclusions,large CeAlO3 clusters and small CeAlO3 particles were observed from the center to the edge of the ingot bottom.Large inclusions were mainly concentrated at the center.The number density of inclusions larger than 200 μm was 0.21 mm-3.The maximum diameter of CeAlO3 clusters was 1340 μm.From the edge to the radial center and from the bottom to the top,the average diameter of inclusions gradually increased due to the longer solidification time of the ingot.

外文关键词：

InclusionHeavy ingotCerium treatmentCollision

作者：

Qiu-yue Zhou、Jun-tao Ba、Lun Zhang、Wei Chen、Ying Ren、Li-feng Zhang

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作者单位：

School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China

School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,Hebei,China

School of Mechanical and Materials Engineering,North China University of Technology,Beijing 100144,China

基金：

National Key R&D ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Hebei ProvinceHigh Steel Center(HSC)at Yanshan University and North China University of Technology,China

项目编号：

2023YFB3709900U22A2017152104343E2021203222

出版年：

2024

DOI：

10.1007/s42243-023-01154-6

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(8)