Powder processing and abrasion resistance of in-situ iron matrix-TiC-reinforced composites
Reactive powder processing techniques were used to produce TiC reinforced ferrous matrix composites. Mixture of elemental Fe, Cr, Ti and graphite powders were hot-pressed to full density. During heating a Self-propagating High-temperature Synthesis (SHS)-type reaction initiated at about 1150°C and transformed the Ti, Cr and graphite powders to TiC and (Fe,Cr)x,Cy in an steel (Fe-Cr-C) matrix. This reaction occurred only in those mixtures containing Ti powder (i.e., no such reaction was detected in mixtures of Fe, Cr and graphite powders). The resultant hot-pressed microstructures consisted of uniformly dispersed and large carbide particles in a steel matrix, and ideal microstructure for abrasion resistance. The abrasion resistance of the composites were evaluated by pin-abrasion testing and the results compared favorable to traditional wear resistant materials, such as cast iron.
- Research Organization:
- Albany Research Center (ARC), Albany, OR
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- OSTI ID:
- 900349
- Report Number(s):
- DOE/ARC-2001-008
- Country of Publication:
- United States
- Language:
- English
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Wear resistant, powder processed in-situ iron-matrix TiC composites
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Related Subjects
ABRASION
CARBIDES
CAST IRON
GRAPHITE
HEATING
IRON
MICROSTRUCTURE
MIXTURES
PROCESSING
STEELS
SYNTHESIS
TESTING
abrasive wear
carbides
composite materials
ferrous alloys
hot pressing
particulate composites
powder technology
processing effects
self-propagating synthesis
titanium carbide
wear resistance