In situ observation of deformation processes in nanocrystalline face-centered cubic metals

• Aaron Kobler,
• Christian Brandl,
• Horst Hahn and
• Christian Kübel

Beilstein J. Nanotechnol. 2016, 7, 572–580, doi:10.3762/bjnano.7.50

• rupture of the film. In conclusion, conventional deformation mechanisms are still active in nanocrystalline metals but with different weighting as compared with conventional materials with coarser grains. Keywords: ACOM-STEM; deformation mechanisms; in situ straining; nanocrystalline metals; orientation

• metals are beyond the spatial resolution limits of EBSD (>20 nm) [36]. Here, we demonstrate a combination of automated crystal orientation mapping (ACOM) in scanning TEM (STEM) modus with in situ straining [37][38][39] of NC metals to follow the GB-mediated processes (GB sliding and grain growth) and

• transition and strength of the active deformation mechanisms in nanocrystalline material. Conclusion In summary, the utilization of ACOM-STEM in combination with in situ straining of ncPda and ncAuPda inside the TEM revealed the spatial–temporal interaction of intergranular and intragranular proccesses