MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Microstructural Characterization of Spark Plasma Sintered In Situ TiB Reinforced Ti Matrix Composite by EBSD and TEM
Haibo FengYu ZhouDechang JiaQingchang Meng
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2005 Volume 46 Issue 3 Pages 575-580

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Abstract

The spark plasma sintered in situ TiB reinforced titanium metal matrix composite was investigated by EBSD and TEM. The sintered composite consists of 30.8% α-Ti phase, 55.7% β-Ti phase and 12.9% in situ TiB reinforcements. Most of the TiB whiskers distributed along phase boundaries between α-Ti and β-Ti, others located within α-Ti and β-Ti grains. Some β-Ti grains with parallel TiB whiskers were observed in the orientation imaging micrograph (OIM). The TiB grows along [010] direction and forms whisker with a hexagonal cross-section. The [010] direction of paralleled TiB whiskers is parallel to [111] direction of cubic β-Ti. High density stacking faults are formed in (100)TiB planes to minimizing the lattice mismatch between TiB and the Ti matrix.

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© 2005 The Japan Institute of Metals and Materials
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