Abstract
In a study of the radiation damage characteristics of aluminum alloys, it was found that (100) precipitate platelets occur in an aluminum alloy containing 100 ppma Cu when subjected to a neutron fluence of 2 x 1024 (corresponding to 0.26 dpa). As a result of work at the University of Florida concerning the computer simulation of small defect images, the relationship between the strain field of a defect and its TEM image was well understood and the differences between images of these (100) precipitate platelets and those expected for dislocation loops were quickly recognized. The theoretical and experimental images of a dislocation loop in aluminum are compared in Figure 1 to those for the platelet. Note that the lobes forming the body of this so-called butterfly image are much stronger for the platelet than the dislocation loop; the wings, on the other hand, are much weaker.
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Schedule a callMore From: Proceedings, annual meeting, Electron Microscopy Society of America
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