Abstract
Gold-nickel solid solution alloys were irradiated by high voltage electron microscopy with 2.0 MeV electrons. After irradiation, specimens were examined by energy dispersive X-ray microanalysis, quantitative stereo microscopy and high resolution electron microscopy. Defect clusters were formed by irradiation at high temperatures, at which dislocation loops were not formed. β-Ni precipitates were identified, which were octahedral and were surrounded by {111} planes. These precipitates were formed homogeneously and shrank when the irradiation was interrupted. This is radiation-induced homogeneous precipitation, which was observed for the first time in gold-nickel alloys
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