Evolution of inclusions in Ti-Ce-Mg deoxidized steel and its effect on acicular ferrite transformation in simulated welding HAZ

被引：0
作者：
Wang, Chao [1 ,2 ]
Fu, Bo [1 ]
Han, Yanfa [1 ]
Jia, Chuntang [1 ]
机构：
[1] State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114021, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2024年 / 40卷
基金：
中国国家自然科学基金;
关键词：
Microstructure; Welding; Steel; Non-metallic inclusion; Acicular ferrite; MICROSTRUCTURE; MN;
D O I：
10.1016/j.mtcomm.2024.110067
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The characteristics of non-metallic inclusions in Ti-Ce-Mg deoxidized steel and their influence on the microstructure and toughness of welding heat-affected zone (HAZ) were studied. Results showed that Ti-Ce-Mg deoxidation led to a refined inclusion size and an increase in the number of inclusions below 1 mu m. The highest acicular ferrite fraction was obtained in the HAZ of Ti-Ce-Mg steel, and the impact toughness was significantly improved. Ti-Ce deoxidation enhanced the stability of Ti-containing oxide, while Mg treatment promoted its fine dispersion. The final formation of composite inclusions of Ti-Ce-Mg oxide with TiN and MnS enhanced the ability to induce acicular ferrite transformation.
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页数：5
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