Research Article

High Frequency Vibration Fatigue Behavior of Ti6Al4V Fabricated by Wire-Fed Electron Beam Additive Manufacturing Technology

Figure 10

Microphotographs showing (a) the fatigue crack path in a representative wire-fed EBAM Ti6Al4V specimen from (b) initiation on the surface in the region of the fatigue zone at α-colonies to progression by growth and propagation along the α-colony boundaries and through the α-colonies of lamellae, which manifested as (c) a deviating crack exhibiting high tortuosity.