Compositionally Complex Alloys

The classical concept for tailoring properties of metallic materials compromises alloying of a single, metallic principal element with typically minor alloying elements. In contrast, compositionally complex alloys contain many different elements in significant amounts - in some cases even equimolar. These alloys often exhibit rather simple disordered, face centered cubic A1 or body centered cubic A2 crystal structures or superstructures of these like B2. Our work on compositionally complex alloys focuses on the combination of contradictory properties like high solidus temperatures by refractory metals and good oxidation resistance by passivating elements.

Following topics are currently under investigation:

• M.Sc. Amin Radi:
  Development of novel Ti-based alloys with improved thermal-mechanical capability
• M.Sc. Liu Yang:
  Creep behavior and deformation mechanisms of precipitation-strengthened Ta-Mo-Cr-Ti-Al alloys