Deformation and damage behavior of colonies in a small-sized α/β Ti alloy

The mechanical behavior of small-sized Ti alloy containing only a few colonies is expected to be different from that of its bulk counterpart. Here, we found that depending on the relation between the geometrical and colony scales of the small-sized Ti alloy, fracture did not always occur preferentially in the colony with the maximum Schmid factor. The proposed model suggests that the local strain level in the colony is a dominant factor.