Abstract

The technique of using superlattice reflections to image directly in the transmission electron microscope zones of reduced long-range order created at displacement cascade sites in Cu 3Au and other ordered alloys has now been used successfully in several investigations of cascade damage produced by fast particles. These have included heavy-ion damage (in several alloys and with different species of heavy ion) and in Cu 3Au cascade damage produced by 3.5 MeV protons, two sources of moderated fission neutrons (the Harwell reactor Pluto, and the Argonne CP5) and a source of fusion neutrons (the Lawrence Livermore Laboratory RTNS-1). In this paper these investigations are reviewed.

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