| 摘要 |
PROBLEM TO BE SOLVED: To produce particle strengthened type titanium matrix composite material having excellent high cycle fatigue characteristics, in anα-βtype titanium matrix composite material contg. TiB or TiC particles, by regulating the metallic structure of the matrix into a fine acicular phase structure. SOLUTION: A particle strengthened type titanium matrix composite material contg. TiB(titanium boride) or TiC(titanium carbide) particles and using anα-βtype titanium alloy as the matrix is subjected to heat treatment of eliminate the colony particle structure of the alloy matrix, and the metallic structure of the matrix is regulated into a fine acicular structure to obtain the particle strengthened type titanium matrix composite material. In this way, the material is the one in which the metallic structure is fine and to which high cycle fatigue strength is imparted and useful in the industrial fields of automobile or the like.
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