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- Title
Pinning Effect of In-Situ TiC<sub>p</sub> and TiB<sub>w</sub> on the Grain Size and Room Temperature Strength of (TiC + TiB)/Ti Composites.
- Authors
Lei Jia; Biao Chen; Shu-feng Li; Hisashi Imai; Katsuyoshi Kondoh
- Abstract
(TiCp + TiBw)/Ti composite was firstly prepared by spark plasma sintering (SPS) and hot extrusion from Ti-B4C system, and then isothermally heat treated at 400-800 °C for 24 h to study the pinning effect of the in situ formed reinforcements. Microstructure and phase composition was investigated by SEM, XRD and TEM, variation of the grain size of Ti matrix was studied by EBSD analysis, and room temperature strength was also measured after different heat treatments. Results show that, comparing with pure Ti materials, both the grain size of Ti matrix and the room temperature strength of the composite almost keep stable after heat treatments, suggesting the pinning effect of in situ formed TiCp and TiBw is effective to suppress the growth of Ti matrix grains during heat treatments.
- Subjects
TITANIUM compounds; ISOTHERMAL processes; SCANNING electron microscopy; TRANSMISSION electron microscopy; HEAT treatment
- Publication
KONA: Powder & Particle Journal, 2015, Issue 32, p264
- ISSN
0288-4534
- Publication type
Article
- DOI
10.14356/kona.2015020