Article ID Journal Published Year Pages File Type
1501031 Scripta Materialia 2010 4 Pages PDF
Abstract

A new technique to perform in situ miniaturized bending fatigue experiments was applied to single crystal copper beams. Pronounced monotonic hardening and an increasing Bauschinger effect were observed with increasing normalized displacement. Remarkably, no cyclic hardening or softening was observed. Three-dimensional discrete dislocation dynamics simulations support these results and point out the importance of dislocation pile-ups and local hardening mechanisms. These lead to local strain redistribution and the activation of new glide planes as observed experimentally.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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