The kinetics of liberating implanted helium from a 20-45 nickel alloy in high-temperature deformations

The authors develop a method of recording the desorption of helium during a high-temperature deformation. The method was tested with Kh20N45 alloy samples which had been previously irradiated with 40-keV helium ions. The desorption rate decreased uniformly during a 2-h exposure at 1000 degrees K. The dependence which the authors obtained for the rate of helium liberation upon the mechanical stress seems to be associated with an increase in the mobility of the helium atoms by diffusion. The results indicate that deformations substantially affect the liberation of helium. This must be taken into account in the energy balance of the plasma