Figure 5 Surface micrographs of pillars after compression with true
strain 25%. (a), (c) and (e) are [100] Mo, [100] Mo-14Re and
[100] Mo-42Re, respectively. (b), (d) and (f) are [110] Mo,
[110] Mo-14Re, and [110] Mo-42Re, respectively.
To analyze the effect of Re content on compression behavior, [100]
Mo and Mo-42Re are observed via TEM, as shown in Figure 6. TEM samples
are prepared via FIB methods to get a thin cross-sectional region. The
view directions are signed in Figure 6a and 6e. One group of parallel
slip bands within high density dislocations are observed in [100]
Mo, as marked in Figure 6b. The beam direction is [110], as shown in
Figure 6c. Figure 6d is the magnification of region B in Figure 6b, in
which dislocations are nearly free at the bottom region. Thus, plastic
deformation takes place locally in slip bands and rarely in other parts
of the [100] Mo pillar.