Influence of gamma-radiation and low-temperature elastic sign-variable loading on mechanical properties of D16 alloy

Interaction and radiation defects with the defects implanted at low-temperatured elastic sign-variable loading and its influence on mechanical properties of D16 alloy was studied. As the initial material was chosen an alloy in the hardened and naturally-aged state. It was shown that with the increasing of a number of loading cycles the ultimate strength and the yield strength of D16 alloy increased, and by this, the plasticity decreased. The highest strength properties were obtained in case when the loading took place after γ-irradiation. In case when the loading was during γ-irradiation or before irradiation the strength properties increased without loss of ductility dor the naturally-aged alloys in particular. It may be explained by the fact that interstitial atoms, implanted by irradjation having the lowest migration energy than the vacancies, reached the stacking faults quicker