In the last decade, several activities have shown how the performance of Ge-based optoelectronic devices, often required to operate in a wide temperature range, critically depends on both their strain status and on the carrier population of nearly degenerate bands, which are non-trivial function of the temperature. In this work, we provide a systematic study on how the temperature dependent...
Ni-base single-crystal (SX) superalloys find application in turbine blades for gas engines due to the high-
temperature and high-stress strength originating from the coherent γ/γ’ microstructure. It is well-known
at sufficiently high stresses, two 1/2<101> dislocation families with different Burgers vector can react
and dissociate into two partial dislocations in γ channels. This allows the...
The striving for advanced materials with well-defined microstructures has led to an increasing effort towards a physically based description of the motion of dislocations as the cause of plastic deformation. Several dislocation-based continuum theories have been introduced, but only recently rigorous techniques have been developed for performing meaningful averages over systems of moving,...
Refractory High Entropy Alloys (RHEA) are considered novel promising high temperature materials for structural applications at ultra-high temperatures primarily due to their attractive mechanical properties. While many RHEA suffer from poor oxidation resistance similar to that of pure refractory metals, some RHEA exhibit very good protectiveness which is attributed to the formation of either...
