Applications of radioisotopes to problems of deformation of solids

Abstract

The conditions most suitable for the welding of copper and silver specimens have been indicated; no distinction has been made between the recrystallisation i characteristics of copper and silver. This may not have been completely justified but no differences were observed during the experiments.

Indications have been made of the steps necessary to increase the resolution to a value which is comparable with the resolution of the stripping emulsion technique.

The conclusion is that while markers in single crystals would only be obtained with difficulty, markers I could be located in large-grained polycrystals of copper and silver with a resolution of 5 μ.