Iron aluminide-titanium carbide composites by pressureless melt infiltration -- microstructure and mechanical properties

Journal Article · Sun Sep 01 00:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00193-5· OSTI ID:367258

Subramanian, R; Schneibel, J H; Alexander, K B; Plucknett, K P ^[1]

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1. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

In this investigation, processing of fully dense TiC-based cermets with iron aluminide (Fe-40 at. % Al) as a binder by pressureless melt infiltration has been clearly demonstrated. The carbide contents in these composites varied from 70 to 85 vol. %. Specimens with 30 vol. % intermetallic exhibited bend strengths of 1034 MPa, fracture toughness of 18 MPa{center_dot}m{sup 1/2} and a Rockwell (R{sub A}) hardness of 83.5. Further improvements in bend strengths may be possible by controlling the grain size and by modifications of the Fe40Al/TiC interface strengths.

• DOE Contract Number: AC05-96OR22464
• OSTI ID: 367258
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 5 Vol. 35; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COMPOSITE MATERIALS
FABRICATION
FLEXURAL STRENGTH
FRACTURE PROPERTIES
GRAIN SIZE
HARDNESS
IMPREGNATION
INTERFACES
INTERMETALLIC COMPOUNDS
IRON ALLOYS
LIQUID METALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
OPTICAL MICROSCOPY
POWDERS
SCANNING ELECTRON MICROSCOPY
TITANIUM CARBIDES
X-RAY SPECTROSCOPY