Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 502, Issue 1-2, Pages 91-98Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2008.10.002
Keywords
Metal matrix composites (MMCs); In situ Cu-TiC composites; Microstructure; Self-propagating high temperature synthesis (SHS); Casting
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Funding
- Naval Materials Research Laboratory, Ambernath
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The present investigation discusses observations pertaining to the synthesis of Cu-based composites containing TiC particles in the range of 45-50 volume % by self-propagating high temperature synthesis (SHS) process. A composite with 11-13 volume % TiC dispersion was also synthesized through remelting and dilution. The composites were observed to contain a copper matrix together with a Cu-Ti intermetallic compound, TiC dispersoid particles and partially reacted graphite. The regions showing partially reacted graphite (carbon) became less prominent in the diluted composites. Al addition led to the refinement of TiC particles, higher hardness, reduced density and improved degree of formation and better homogeneity of the distribution of TiC particles. Dilution caused reduced hardness, while the density followed a reverse trend. (C) 2008 Elsevier B.V. All rights reserved.
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