Fatigue crack growth in an in-situ titanium matrix composite

Abstract The results of a recent investigation of fatigue crack growth in the in-situ titanium matrix composite, Ti–6Al–4V–0.5B, are presented. An effort is made to understand the crack-tip plasticity in a TiB whisker reinforced titanium matrix composite using crack-tip transmission electron microscopy (TEM) techniques. The results of crack/microstructure interaction studies are discussed, and an effort is made to quantify the effects of fatigue crack bridging.