| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
11th International Symposium on High Temperature Metallurgical Processing
|
| Presentation Title |
Theoretical Analysis and Experimental Verification of Formation of As-bearing Rare Earth Inclusions in Steel |
| Author(s) |
Bin Bai, Hongpo Wang, Silu Jiang, Lifeng Sun, Yu Wang |
| On-Site Speaker (Planned) |
Bin Bai |
| Abstract Scope |
It is a feasible method to improve the quality of steel products by adding rare earth to change the state of arsenic in steel to avoid its harm. In this study, the As-bearing rare earth inclusions in steel were extracted by non-aqueous electrolysis method, and their types were fully understood. Wagner activity model and non-equilibrium solidification model were used to calculate the formation process of rare earth inclusions in liquid and solidification process. The formation mechanism of single-phase and complex the As-bearing rare earth inclusions was verified by laboratory experiments. The results showed that La2O3 and La2O2S were formed in the liquid phase, then the As-bearing rare earth inclusions La-S-As and La-As began to form during the solidification process of steel liquid. The composite inclusions of La-O-S-As with distinct stratification were further precipitated. |
| Proceedings Inclusion? |
Planned: |