Figure 8
From: The Role of Nano-domains in {1–011} Twinned Martensite in Metastable Titanium Alloys

Dark-field TEM micrograph of Ti-4Al-4Fe-0.25Si alloy strained to 2% showing (a) O′s, (b) β and (c) ω. (d) Schematic to show the phase constituents in α′p.