Process for producing a composite material consisting of gamma titanium aluminide as matrix with titanium diboride as perserdoid therein.

摘要

A TiA l intermetallic compound source and a boride which is less stable than TiB2 are mixed and melted, followed by solidification to form a TiB2-dispersed TiA l -based composite material in which the TiB2 is contained in an amount of 0.3 to 10% by volume. In this process, the dispersed TiB2 particles become very fine, so that the hardness as well as the elongation and bending strength of the TiA l material are improved by the finely dispersed TiB2 particles.