TiC reinforced cast Cr steels
A new class of materials, namely TiC-reinforced cast chromium (Cr) steels, was developed for applications requiring high abrasion resistance and good fracture toughness. The research approach was to modify the carbide structure of commercial AISI 440C steel for better fracture resistance while maintaining the already high abrasion resistance. The new alloys contained 12Cr, 2.5–4.5Ti, and 1–1.5C (wt.%) and were melted in a vacuum induction furnace. Their microstructure was composed primarily of a martensitic matrix with a dispersion of TiC precipitates. Modification of TiC morphology was accomplished through changing the cooling rate during solidification. Wear rates of the TiC-reinforced Cr steels were comparable to that of AISI 440C steel, but the impact resistance was much improved.
- Research Organization:
- Albany Research Center (ARC), Albany, OR (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- DOE Contract Number:
- None cited
- OSTI ID:
- 923058
- Report Number(s):
- DOE/NETL-IR-2006-117; 1544-1024 (Online); TRN: US200804%%1538
- Journal Information:
- Journal of Materials Engineering and Performance, Vol. 15, Issue 3
- Publisher:
- ASM International; Materials Park, OH
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
ABRASION
ALLOYS
CARBIDES
CHROMIUM
FRACTURE PROPERTIES
FRACTURES
INDUCTION FURNACES
MICROSTRUCTURE
MODIFICATIONS
MORPHOLOGY
SOLIDIFICATION
STEELS
cast steel
chromium steel
corrosion resistant steel
wear resistant steel
solidification of TiC-containing steel
titanium carbide precipitates
wear-resistant steel