Abstract
Refinement of austenite grains by generating intra granular ferrite (IGF) in austenite grains is one of the most effective methods for improving the toughness of the heat-affected zone (HAZ). It is known that MnS precipitated on fine oxides enhance formation of IGF in austenite grains. Flux composed of CaO -Al 2O 3 is often used in secondary refining and Ca-Mn-Al complex oxide may form, and it is important to clarify the mechanism of MnS precipitation on oxide inclusions. Therefore, molten CaO-MnO-Al 2O 3 oxide was equilibrated with (Ca, Mn)S solid solution in Al 2O 3 crucible in an electric resistance furnace at 1 648, 1 698 and 1 748 K in the present work. Phase relation between CaO·Al 2O 3 saturated molten CaO-MnO- Al 2O 3 oxide and (Ca, Mn)S solid solution was clarified.
| Original language | English |
|---|---|
| Pages (from-to) | 2007-2011 |
| Number of pages | 5 |
| Journal | Isij International |
| Volume | 51 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2011 |
Keywords
- Deoxidation
- Desufurization
- Inclusion
- Oxysulfide
- Phase diagram
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry