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The purpose of the
present study is to obtain a new high-performance
titanium alloy matrix composite by a newly developed
low cost blended elemental (BE) powder metallurgy
process. TiB particle has been verified to be an
ideal dispersoid for the titanium alloy matrix composite
from their thermodynamic stability, interfacial
matching and fatigue crack growing behavior. More
than 99% dense compact of several titanium alloy
matrix composites with TiB particle dispersion was
obtained by the developed BE process. This process
involves a slight kneading treatment of titanium
sponge-fines during mixing with master alloy powders,
which is followed by cold compacting to the near-net-shape
and sintering in a vacuum. The developed low cost
titanium alloy matrix composites is superior in
tensile strength, fatigue strength, heat resistance,
elastic modulus and wear resistance.
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