文献类型：期刊文献

英文题名：Study on the thermodynamic stability and evolution of inclusions in Al-Ti deoxidized steel

作者：Wang, Jun Wang, Linzhu Li, Xiang Li, Junqi Chen, Chaoyi Li, Changrong Zhuang, Changling

第一作者：Wang, Jun

通信作者：Wang, LZ[1];Li, JQ[1]

机构：[1]Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Dept Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China.

年份：2022

卷号：41

期号：1

起止页码：206-215

外文期刊名：HIGH TEMPERATURE MATERIALS AND PROCESSES

收录：;EI(收录号：20221912094081);Scopus(收录号：2-s2.0-85129673379);WOS:【SCI-EXPANDED(收录号:WOS:000789973000002)】；

基金：The authors gratefully acknowledge the fundamental support from the National Natural Science Foundation of China and the science and technology planning project of Guizhou.

语种：英文

外文关键词：inclusions; steel; deoxidize

摘要：To investigate the thermodynamic stability and the evolution process of inclusions in the Al-Ti deoxidized steels, both laboratory experiments and thermodynamic calculations were conducted in the present work. Scanning electron microscope-energy dispersive spectrometer (SEM-EDS) and Al2O3-Ti2O3-TiO2 phase diagrams were used to investigate the composition of oxide inclusions after adding various contents of Al and Ti. The results show that the TiO x content of inclusions increases with the increase in titanium addition in steel ranging from 0.31 to 1.88%, and the typical inclusions are transferred from pure Al2O3 to multi-phase Al-Ti complex inclusions and Al2O3-TiO x complex inclusions with uniform composition. The TiO x content in the inclusions first increased and then decreased with the extension of deoxidation time in the steels with deoxidants of [% Al] = 0.055 and [% Al] = 0.71, and the content of TiO x in the inclusions is highest at 360 s of deoxidation. There is a small amount of pure titanium oxide and liquid Al2O3-TiO x composite inclusions in the steel with deoxidants of [% Al] = 0.13 and [% Ti] = 1.88 at 120 s of deoxidation, and then this part of inclusions gradually turns into the Al2O3-rich phase. The predominance diagrams of the Al-Ti-O-Fe system were obtained based on the classical thermodynamic calculation and FactSage calculation with different databases and products. The calculated results were compared with the experimental data, and the discrepancies on the stable region of oxides in the predominance diagrams were discussed. The evolution and transformation of inclusions during the solidification process were analyzed based on FactSage calculation.