Back to Search Start Over

Effect of calcium treatment on inclusions in 38CrMoAl high aluminum steel

Authors :
Li Yang
Chen Changyong
Zhang Cong
Ma Shuai
Yang Hao
Sun Meng
Cao Haibo
Jiang Zhouhua
Source :
High Temperature Materials and Processes, Vol 43, Iss 1, Pp pp. 4957-4963 (2024)
Publication Year :
2024
Publisher :
De Gruyter, 2024.

Abstract

Three parts of the experiment were mainly carried out in this research: the effect of Ca on inclusions in 38CrMoAl high aluminum steel under atmospheric pressure, the effect of pressure on the solubility of Ca in pure iron under pressurized conditions, and the effect of Ca on inclusions in 38CrMoAl high aluminum steel under pressurized conditions. The results indicated that Ca can significantly transform the inclusions such as Al2O3 and MgO·Al2O3 with high melting points into calcium aluminate inclusions with low melting points. It was found that the pressure condition can significantly improve the solubility of Ca in pure iron and molten steel, which provided reliable data reference and guidance for popularizing Ca treatment of steel under pressure conditions in the future. Finally, the mechanism of inclusion transformation after Ca treatment was put forward. In this study, the theoretical calculation of thermodynamics was closely compared with the experimental data. It was proposed that to modify the inclusions in high aluminum steel into calcium aluminate inclusions with low melting points, it is necessary to accurately control Ca in the target region.

Details

Language :
English
ISSN :
21910324
Volume :
43
Issue :
1
Database :
Directory of Open Access Journals
Journal :
High Temperature Materials and Processes
Publication Type :
Academic Journal
Accession number :
edsdoj.75ae607979e04d9cbf2e778b5ead3fe6
Document Type :
article
Full Text :
https://doi.org/10.1515/htmp-2024-0018