Journal
MATERIALS LETTERS
Volume 187, Issue -, Pages 28-31Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2016.10.060
Keywords
Composite materials; Titanium alloy; Interfaces; Nanocrystalline materials; Orientation relationship
Funding
- Russian Science Foundation [15-19-00165]
- Russian Science Foundation [15-19-00165] Funding Source: Russian Science Foundation
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A Ti-10 wt%TiB metal-matrix composite (MMC) was produced by spark plasma sintering (SPS) at temperatures of 850 or 1000 degrees C corresponding to the a or the beta phase fields of Ti, respectively. In the interval 400-700 C the MMC produced at 1000 degrees C showed higher strength and lower ductility in comparison with the MMC produced at 850 degrees C. The results of the mechanical tests and the fracture surface analysis suggested higher brittle-to-ductile transition temperature of the specimens obtained at 1000 degrees. This phenomenon can be ascribed to different structures of Ti/TiB interfaces formed during SPS above and below the alpha <->beta transition.
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