A research on the creep properties of titanium matrix composites rolled with different deformation degrees

(TiB + La2O3)/Ti composites were in situ synthesized and deformed with different deformation degrees. The influence of TiB whisker orientation and grain refinement on the creep properties of titanium matrix composites (TMCs) are discussed. The creep test reveals that the steady state creep rate of TMCs first decreases and then increases with the increase of deformation degree, which can be attributed to competing effects: TiB whisker rotating to the rolling direction, alpha plate grain boundary hindering and pinning dislocations can all decrease the creep rate, however, dislocation movement on the alpha plate grain boundary and dislocation emitting from the alpha plate grain boundary can both increase the creep rate. (C) 2014 Published by Elsevier Ltd.