Scanning Probe Microscopy and Dislocations

Macro- to Nano-indentation Hardness Stress–Strain Aspects of Crystal Elastic/Plastic/Cracking Behaviors

“…2, however, it was not possible to locate the residual nanoindentation. [15] and by Coupeau et al [16]. The fitted indenter tip diameter of 3,200 nm, obtained by trial-and-error calculation, is eight times greater than the 400 nm value determined for Fig.…”

“…Woirgard et al have commented on the flat nature of residual nanoindentations made in GaAs as part of a research investigation also involving MgO nanoindentations [22]. Also, Coupeau et al [16] reported atomic force microscopy images and surface depth measurements for the residual indentation test result described in Fig. 3 that match the very substantial depth recovery shown in the unloading curve.…”

Penetration resistance: A new approach to the energetics of indentations

“…These long‐range effects are known from early reviews of Nadgornyi (, see section 6.1) and Coupeau et al . (). They have to be distinguished from cracks at the indenter edges as in the case of silicon (Ebrahimi and Kalwani, ), but may occur in addition to these and also to pile‐up.…”

Sir Alan Cottrell and the dislocation mechanics of fracturing

“…Figure 6 provides a schematic illustration of the surface relief and internal dislocation structure accompanying cyclic loading [63]. Cottrell gave emphasis to the mechanical aspect of the nucleation and growth of cracking in a PSB as compared with the importance of mass transport by diffusion because of results obtained by Hull on copper tested at temperatures as low as 4. microscopy of slip step heights at opposing dislocation pile-ups on parallel planes and evaluated the results in terms of mutually blocking dislocation pile-ups [65]. Head had reported the first numerical calculations of such opposing dislocation pile-ups [66].…”