Article ID Journal Published Year Pages File Type
1501436 Scripta Materialia 2008 4 Pages PDF
Abstract

The Hall–Petch relationship in a nanotwinned alloy with absence of dislocation pile-ups is investigated for the first time. It is shown that, when the twin spacing is large (d > 150 nm), the hardness exhibits a d−1/2 dependence. However, when the twin spacing is small (d < 100 nm), a d−1 dependence results. These phenomena are interpreted based on dislocation-mediated mechanisms corroborated by the analysis of electron microscopy and X-ray diffractometry.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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