P/M Fe/Cr-TiC composites: processing, microstructure and abrasive wear behavior
Powder metallurgy (P/M) can be utilized to fabricate wear resistant Fe-Cr-TiC composite alloys. In this study, iron powder was mixed with elemental titanium, chromium, and graphite powders, and then hot-pressed to full density. During the hot pressing cycle, an SHS-type reaction occurred, transforming the titanium and chromium powders to TiC and (Fe,Cr) sub x C sub y , in a steel (Fe-Cr-C) matrix. The influence of alloy composition and SHS process parameters on the microstructure and abrasive wear resistance of the TiC reinforced composites were discussed. Furthermore, surface modification of the composites using an infrared melting technique was explored. It is demonstrated that the in-situ formation of TiC and (Fe,Cr) sub x C sub y precipitates via SHS reaction processing and surface melting produce a composite with wear resistance superior to conventional wear resistant materials.
- Research Organization:
- Albany Research Center (ARC), Albany, OR
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- OSTI ID:
- 900354
- Report Number(s):
- DOE/ARC-2001-012
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABRASIVES
ALLOYS
CHROMIUM
GRAPHITE
HOT PRESSING
IRON
MELTING
MICROSTRUCTURE
MODIFICATIONS
PARTICULATES
POWDER METALLURGY
PROCESSING
STEELS
TITANIUM
WEAR RESISTANCE
abrasion resistance
chromium steels
composite materials
densification
hot pressing
metal matrix composites
powder blending
powder technology
reactive processing
self-propagating synthesis
titanium carbide
wear rate