Strengthening contributions of strong ordered precipitates
- 1 October 1987
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 56 (4) , 507-515
- https://doi.org/10.1080/01418618708214402
Abstract
The Hanson-Morris solution for the critical resolved shear stress of a random array of point obstacles is modified and applied to strong ordered precipitates. The solution approximately accounts for the effects of dislocation self-interactions and elastic anisotropy. The modified solution leads to a simple relationship between the antiphase boundary energy and the minimum looped precipitate diameter. This relationship is used to predict antiphase boundary energies for Al3Li and Ni3Al of 57 ± 15 mJ m−2 and 102 ± 35 mJ m−2. These values are in good agreement with recent determinations of the antiphase boundary energy by other techniques.Keywords
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