Papers by Keyword: Slip Lines

Abstract: Dynamic recrystallization processes in heat-resistant Ni-based alloy was investigated depending on temperature, strain rate and deformation ratio. Recrystallization intensity is determined by the temperature and deformation conditions. The factors that increase the degree of dynamic recrystallization include temperature and amount of strain increasing, as well as decreasing of strain rate. Increasing the volume fraction of recrystallized structure causes a uniform fine-grained structure.

Abstract: Despite extensive studies on the aging behaviour of Al3Sc containing alloys, the underlying mechanism of the precipitation strengthening is still not well understood. In particular, the transition radius at which particles become non-shearable is not known. In this work, the work hardening behaviour of an Al-2.8Mg-0.16Sc (wt%) alloy has been characterized for different stages of aging and the corresponding slip line features at the surface of strained specimens have been examined using Nomarski interference contrast. Moreover, the work hardening behaviour is discussed in the framework proposed by Kocks, Mecking and Estrin. It is proposed that changes in macroscopic work hardening behaviour can be used as a signature of the shearable/non-shearable transition.