| Title |
Research Paper - Transformations : Phase Transformations and Subsequent Solute Redistribution Behaviors of Fe - 15Cr - 5V - 1.2C Alloy |
| Authors |
조규변(Gue Serb Cho); 김창변(Chang Seob Kim); 오규환(Kyu Hwan Oh); 라자용(Hyung Yong Ra) |
| Abstract |
Transformation sequence and subsequent solute redistribution behaviors of Fe-15Cr-5V-1.2C alloy during solidification have been discussed. Specimens were quenched interruptly, as they were solidified and transformed. Primary δ-ferrite was not completely transformed into γ-austenite during δ→γ peritectic reaction. During the peritectic reaction V was enriched to the retained δ-ferrite, but Cr was not. When the retained δ-ferrite was directly changed into α-ferrite. V was diffused from δ-ferrite into the surrounding γ-austenite due to the decrease of V-solubility in the α-ferrite. As heating the as-cast specimen up to 1000℃, precipitated iron complex carbides were dissolved into the newly formed γ-austenite. The iron carbides were inferred as M_(23)C_6 carbides from the mole fraction change of each phases existing at the heating temperatures and microstructure change with increasing heating temperatures. |