Abstract
Creep behavior of the TiC-particulate-reinforced Ti alloy composite has been investigated at temperatures from 500 to 650°C and stresses from 230 to 430 MPa. Creep strain rates of the composite are lower than those of the matrix alloy by one order of magnitude. The lower creep rates for the composite can be attributed to Young's modulus effect. Creep fracture of the composite is produced by the cavitation at the interfaces of TiC and matrix and the cleavage of TiC. There are dimples on the fracture surface of the matrix which are similar to those of the matrix alloy.
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