Figure 1
Microstructure variations depending on the added element. (a–d) Crystal orientation maps of the constituent C11b phases in the FZ-grown crystals annealed at 1400 °C for 168 h examined by SEM-EBSD, according to the previous study26. (a) Nonadded (Mo0.85Nb0.15)Si2 ternary crystal, (b) 1 at.% Cr-added crystal, (c) 1 at.% Ir-added crystal, (d) 0.5 at.% Cr and 0.5 at.% Ir-coadded crystals. (e) Schematic of the shape of the C11b-phase grains formed the “cross-lamellar” morphology in the CrIr-added crystal. Noting that in Fig. 1(a–d) the crystal orientation map was analyzed along a direction rotated towards [11 \(\overline{2}\) 0] by 15° from the observed [10 \(\overline{1}\) 0] direction, to distinguish the orientation colors of the three variant C11b-phase grains.
