Journal
JOURNAL OF MATERIALS RESEARCH
Volume 30, Issue 6, Pages 791-797Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2015.49
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Funding
- FWF Austrian Science Fund [P24429-N20]
- Austrian Science Fund (FWF) [P24429] Funding Source: Austrian Science Fund (FWF)
- Austrian Science Fund (FWF) [P 24429] Funding Source: researchfish
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Copper microcantilevers were produced by focused ion beam milling and tested in situ using a scanning electron microscope. To provide different interfaces for piling up dislocations, cantilevers were fabricated to be single crystalline, bicrystalline, or single crystalline with a slit in the region of the neutral axis. The aim of the experiment was to study the influence of dislocation pile-ups on (i) strength and (ii) Bauschinger effects in micrometer-sized, focused ion beam milled bending cantilevers. The samples were loaded monotonically for several times under displacement control. Even though the cantilevers exhibited the same nominal strain gradient the strength varied by 34% within the three cantilever geometries. The Bauschinger effect can be promoted and prohibited by the insertion of different interfaces.
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