Thermodynamic and Experimental Studies on Al Addition of 253MA Steel

被引：1
|
作者：
Li, Yandong [1 ]
Zhang, Tongsheng [2 ]
Liu, Chengjun [3 ]
Jiang, Maofa [3 ]
机构：
[1] Yangtze Normal Univ, Key Lab Extraordinary Bond Engn & Adv Mat Technol, Chongqing 408000, Peoples R China
[2] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[3] Northeastern Univ, Educ Minist, Key Lab Ecol Utilizat Multimetall Mineral, Shenyang 110819, Liaoning, Peoples R China
来源：
METALS | 2019年 / 9卷 / 04期
关键词：
CALPHAD; thermodynamic model; inclusions; rare earth; PHASE-EQUILIBRIUM; ALUMINUM; NOZZLES; SYSTEM; CE2O3;
D O I：
10.3390/met9040433
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To solve the nozzle clogging issue in the continuous casting process of 253MA steel, a method of modifying solid inclusions to liquid phases is proposed. The CALPHAD technique was employed to predict the liquid region of the Al2O3-SiO2-Ce2O3 system. Then a thermodynamic package based on the extracted data during the phase diagram optimization process was developed. This package was then used to compute the appropriate aluminum addition, which was 0.01% in 253MA steel. The Si-Al alloy was chosen as the deoxidant according to the thermodynamic analysis. The solid inclusions were ultimately modified to liquid phases at 1500 degrees C when cerium was added through the equilibrium experiments in a MoSi2 tube furnace.
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页数：7
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