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Title: Iron aluminide-titanium carbide composites: Microstructure and mechanical properties

Abstract

Composites of intermetallics and carbides (with binder contents less that 50 vol.%) are considered as potential candidates for applications requiring high wear resistance in corrosive environments. Intermetallics, especially aluminides, provide the corrosion resistance, and the high hardness of the carbide phase contributes to increased wear resistance of the composites. In this study, cost effective and simple processing techniques to obtain FeAl-TiC composites, over a wide range of binder volume fractions, are demonstrated. Binder volume fractions range from 0.15 to 0.7 (18 to 75 wt. % binder). Two techniques - liquid phase sintering of mixed powders and pressureless melt infiltration of TiC preforms was found to be very successful for obtaining fully dense composites with binder volume fractions from 0.15 to 0.3 (18 to 34 wt. %), whereas for higher binder contents liquid phase sintering of mixed powders was the best approach. Mechanical properties of these composites including the 3-point bend strength, fracture toughness and hardness are presented.

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); Oak Ridge Inst. for Science and Education, TN (United States)
OSTI Identifier:
378693
Report Number(s):
CONF-9606260-2
ON: DE96013782
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Conference
Resource Relation:
Conference: 1996 world congress on powder metallurgy and particulate materials, Washington, DC (United States), 16-21 Jun 1996; Other Information: PBD: [1996]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; TITANIUM CARBIDES; MICROSTRUCTURE; MECHANICAL PROPERTIES; CERMETS; IRON ALLOYS; ALUMINIUM BASE ALLOYS; CERAMICS; POWDERS; SINTERING; FRACTURE PROPERTIES; INTERMETALLIC COMPOUNDS; HARDNESS; BINDERS

Citation Formats

Subramanian, R, Schneibel, J H, and Alexander, K B. Iron aluminide-titanium carbide composites: Microstructure and mechanical properties. United States: N. p., 1996. Web.
Subramanian, R, Schneibel, J H, & Alexander, K B. Iron aluminide-titanium carbide composites: Microstructure and mechanical properties. United States.
Subramanian, R, Schneibel, J H, and Alexander, K B. 1996. "Iron aluminide-titanium carbide composites: Microstructure and mechanical properties". United States. https://www.osti.gov/servlets/purl/378693.
@article{osti_378693,
title = {Iron aluminide-titanium carbide composites: Microstructure and mechanical properties},
author = {Subramanian, R and Schneibel, J H and Alexander, K B},
abstractNote = {Composites of intermetallics and carbides (with binder contents less that 50 vol.%) are considered as potential candidates for applications requiring high wear resistance in corrosive environments. Intermetallics, especially aluminides, provide the corrosion resistance, and the high hardness of the carbide phase contributes to increased wear resistance of the composites. In this study, cost effective and simple processing techniques to obtain FeAl-TiC composites, over a wide range of binder volume fractions, are demonstrated. Binder volume fractions range from 0.15 to 0.7 (18 to 75 wt. % binder). Two techniques - liquid phase sintering of mixed powders and pressureless melt infiltration of TiC preforms was found to be very successful for obtaining fully dense composites with binder volume fractions from 0.15 to 0.3 (18 to 34 wt. %), whereas for higher binder contents liquid phase sintering of mixed powders was the best approach. Mechanical properties of these composites including the 3-point bend strength, fracture toughness and hardness are presented.},
doi = {},
url = {https://www.osti.gov/biblio/378693}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Sep 01 00:00:00 EDT 1996},
month = {Sun Sep 01 00:00:00 EDT 1996}
}

Conference:
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