Iron aluminide-titanium carbide composites: Microstructure and mechanical properties

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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 ... continued below

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8 p.

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Subramanian, R.; Schneibel, J. H. & Alexander, K. B. September 1, 1996.

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Description

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.

Physical Description

8 p.

Notes

OSTI as DE96013782

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  • 1996 world congress on powder metallurgy and particulate materials, Washington, DC (United States), 16-21 Jun 1996

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  • Other: DE96013782
  • Report No.: CONF-9606260--2
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 378693
  • Archival Resource Key: ark:/67531/metadc685581

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Oct. 3, 2017, 1:06 p.m.

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Subramanian, R.; Schneibel, J. H. & Alexander, K. B. Iron aluminide-titanium carbide composites: Microstructure and mechanical properties, article, September 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc685581/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.