Aluminum Deoxidation Equilibria in Liquid Iron: Part III-Experiments and Thermodynamic Modeling of the Fe-Mn-Al-O System

Title
Aluminum Deoxidation Equilibria in Liquid Iron: Part III-Experiments and Thermodynamic Modeling of the Fe-Mn-Al-O System
Author
박종진
Keywords
QUASI-CHEMICAL MODEL; OXYGEN EQUILIBRIUM; 1600 DEGREESC; MELTS; MANGANESE; STEEL; CAO-AL2O3; ALLOY
Issue Date
2016-10
Publisher
SPRINGER
Citation
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, v. 47, No. 5, Page. 2837-2847
Abstract
Deoxidation equilibria in high-Mn- and high-Al-alloyed liquid steels were studied over the entire Fe-Mn-Al composition range by both experiments and thermodynamic modeling. Effect of Mn on the Al deoxidation equilibria in liquid iron was measured by the different experimental techniques depending on the Al content. In order to confirm the reproducibility of the experimental results, the deoxidation experiments were carried out reversibly from high oxygen state by addition of Al as a deoxidizer, and from low oxygen state by addition of Fe2O3 or MnO as an oxygen source. For the Al-rich side, CaO flux was added on top of liquid iron in order to remove suspended Al2O3 inclusions in the melt. Based on the present experimental result and available critically evaluated literature data, the Al deoxidation equilibria in Fe-Mn-Al-O liquid alloy were thermodynamically modeled. The Modified Quasichemical Model was used in order to take into account a strong short-range ordering of atoms in molten state. Deoxidation equilibria and inclusion stability diagram for entire Fe-Mn-Al melt were successfully reproduced by the present model.
URI
https://link.springer.com/article/10.1007%2Fs11663-016-0728-4http://repository.hanyang.ac.kr/handle/20.500.11754/70368
ISSN
1073-5615; 1543-1916
DOI
10.1007/s11663-016-0728-4
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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