fig2

Figure 2. A typical microstructure in a top layer of the as-fabricated Ti-6Al-4V. (A) TKD IPF map showing a hierarchical martensitic structure. (B) GB map showing the distribution of GB types. The colour codes for marking different types of GBs are the same as in Figure 1C . (C) An IPF generated from the blue square region in (A), indicating the boundaries are type 4 inter-variant boundaries.