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.