TY - JOUR
T1 - Diffuse X-ray scattering studies of neutron- and electron-irradiated Ni, Cu and dilute alloys
AU - Ehrhart, P.
AU - Averback, R. S.
N1 - Funding Information:
We are very grateful to the late S. M. Ohr for permission to use his unpublished results on Ni. We are also grateful to Dr B. C. Larson for helpful discussions and the use of his program for fitting loop-size distributions from scattering intensities and to Dr R. C. Birtcher and Dr M. A. Kirk for the neutron dosimetry. This work was supported in part by the United States Department of Energy under Contract No. DE-AC02-76ER01198. Finally, one of the authors (P.E.) wants to thank the Materials Research Laboratory at the University of Illinois for financial support during the time of the preparation of this paper.
PY - 1989/9
Y1 - 1989/9
N2 - Pure Ni and Cu, as well as dilute NiSi0.01, NiGe0.01 and CuBe0.001 alloys, have been irradiated at 6 K with either fast neutrons or 3 MeV electrons. Starting from annealing temperatures well below annealing stage III (i.e. Ta ≈ 77 K for Cu and Ta ≈ 295 K for Ni) the evolution of the defect structures was studied using diffuse X-ray scattering methods. For both types of irradiation of the pure metals, large interstitial and vacancy dislocation loops developed on annealing. The differences between the behaviour of neutron-irradiated Ni and Cu are discussed in terms of the total number of defects surviving spontaneous recombination and the probability of cascade collapse. A dramatic suppression in the growth of the clusters was observed for the NiSi0.01 and NiGe0.01 alloys and complete recovery was consequently observed at lower temperatures. For the neutron-irradiated, more dilute CuBe0.01 alloys, a suppression of cluster growth was observed only after annealing above stage III. These results are discussed within a model for the trapping reactions.
AB - Pure Ni and Cu, as well as dilute NiSi0.01, NiGe0.01 and CuBe0.001 alloys, have been irradiated at 6 K with either fast neutrons or 3 MeV electrons. Starting from annealing temperatures well below annealing stage III (i.e. Ta ≈ 77 K for Cu and Ta ≈ 295 K for Ni) the evolution of the defect structures was studied using diffuse X-ray scattering methods. For both types of irradiation of the pure metals, large interstitial and vacancy dislocation loops developed on annealing. The differences between the behaviour of neutron-irradiated Ni and Cu are discussed in terms of the total number of defects surviving spontaneous recombination and the probability of cascade collapse. A dramatic suppression in the growth of the clusters was observed for the NiSi0.01 and NiGe0.01 alloys and complete recovery was consequently observed at lower temperatures. For the neutron-irradiated, more dilute CuBe0.01 alloys, a suppression of cluster growth was observed only after annealing above stage III. These results are discussed within a model for the trapping reactions.
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U2 - 10.1080/01418618908213863
DO - 10.1080/01418618908213863
M3 - Article
AN - SCOPUS:0024737802
SN - 0141-8610
VL - 60
SP - 283
EP - 306
JO - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
JF - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
IS - 3
ER -