Intermetallics, Complex and High Entropy Alloys

Among the high number of multi-principal-element alloys that are referred to as high-entropy alloys (HEAs) in the literature, only a limited number solidify as single-phase solid solutions. [more]

The potential of high-entropy alloys (HEAs) to exhibit an extraordinary combination of properties by shifting the compositional regime from the corners towards the centers of phase diagrams has ledto worldwide attention by material scientists. [more]

High-entropy alloys (HEAs) consisting of multiple principle elements provide an avenue for realizing exceptional mechanical, physical and chemical properties. [more]

In a set of projects we study the field of strong and ductile non-equiatomic high-entropy alloys (HEAs). [more]

Lattice distortions constitute one of the main features characterizing high entropy alloys.
Local lattice distortions have, however, only rarely been investigated in these multi-component alloys. [more]

We introduce a liquid metallurgy synthesized, non-equiatomic Fe₄₀Mn₄₀Co₁₀Cr₁₀ high entropy alloy that is designed to undergo mechanically-induced twinning upon deformation at room temperature. Microstructure characterization, carried out using SEM, TEM and APT [more]

We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution [more]