The liquid film migration in a sintered Fe-Cr-C base alloy
- Korea Advance Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Materials Science and Engineering
- Hoseo Univ., Asan (Korea, Republic of). Dept. of Materials Science and Engineering
- Daewoo Heavy Industries Ltd., Incheon (Korea, Republic of)
In an Fe-5Cr-1Mo-2Cu-0.5P-3C (wt pct) alloy prepared by liquid-phase sintering at 1,120 C, the intergranular liquid films migrate during cooling and isothermal heat treatment at temperatures where the solid and liquid phases coexist. The liquid film migration (LFM) occurs extensively even during rapid cooling, apparently because of a large driving force. The migrating liquid films solidify to form network carbides. In the regions swept by the migrating liquid films, the concentrations of the substitutional solute atoms are slightly different from those in the original gains. When cooled rapidly, martensite is abundant in these regions. It is possible that the driving force for LFM in this alloy stems in part from the C concentration change associated with the concentration changes of the slowly diffusing substitutional solute atoms.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 78408
- Journal Information:
- Metallurgical Transactions, A, Vol. 26, Issue 6; Other Information: PBD: Jun 1995
- Country of Publication:
- United States
- Language:
- English
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