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Effects of cooling rate and heat treatment on the microstructure of iron-based titanium carbide composites

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Abstract

The microstructural response of iron-carbon-TiC components produced by a liquid route to changes in cooling conditions and post-solidification heat treatments has been investigated. Heat treatments of pure Fe-TiC composite materials have been found to produce only minor changes in the TiC morphology and distribution with reduction in hardness resulting from some TiC precipitation and depletion of the iron matrix of titanium and carbon. As-cast composites containing Fe-2.4% C/10% TiC and Fe-3.27% C/10% TiC exhibit a white cast iron matrix containing dispersed TiC. Subsequent heat treatment of this material at 750° C renders the matrix malleable, replacing the cementite by free graphite with no apparent alteration to the TiC morphology or distribution.

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Terry, B.S., Chinyamakobvu, O.S. Effects of cooling rate and heat treatment on the microstructure of iron-based titanium carbide composites. J Mater Sci 27, 5666–5670 (1992). https://doi.org/10.1007/BF00541640

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  • DOI: https://doi.org/10.1007/BF00541640

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