Investigation on the Precipitation Behaviors of Intragranular Ferrite Due to Titanium Oxide in Microalloyed C-Mn Steel

被引：1
作者：
Wang, Xiaofeng [1 ]
Zhang, Yijian [2 ]
Ding, Fei [3 ]
Zhang, Xiaojun [4 ]
Li, Tao [5 ]
机构：
[1] Shaanxi Univ Sci & Technol, Xian, Peoples R China
[2] Yanshan Univ, Sch Mat Sci & Technol, Qinhuangdao, Peoples R China
[3] Fuyang Normal Univ, Fuyang, Peoples R China
[4] Ansteel Grp Corp, Anshan, Peoples R China
[5] North China Univ Sci & Technol, Coll Met & Energy, Tangshan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF METALCASTING | 2025年
基金：
中国国家自然科学基金;
关键词：
oxide metallurgy; microalloyed C-Mn steel; inclusion; intragranular ferrite; NONMETALLIC INCLUSIONS; AL; EVOLUTION;
D O I：
10.1007/s40962-024-01530-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Through thermodynamic calculations and experiments, the morphology, composition, size, and type of inclusions in microalloyed C-Mn steel after titanium deoxidation were studied, and the microstructure evolution of the steel before and after titanium addition was also studied. The results indicate that after adding titanium, the microstructure of the steel is significantly refined, and the titanium deoxidation products can be the nucleation site of manganese sulfide and titanium nitride inclusions, or Al2O3 becomes the nucleus of the deoxidation product of Ti in solidification of liquid steel, which form fine dispersed inclusions. These small inclusions can induce acicular ferrite precipitation within the austenite grains, resulting in the refinement of the microstructure.
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页数：7
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