Generalised deformation mechanism maps and interaction of dislocation defect phases with vacancies in Laves phases (A05)

• Subject Area: Mechanical Properties of Metallic Materials and their Microstructural Origins
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 409476157

The aim of project A05 is to better understand dislocation defect phases in Laves phases, in particular the mechanisms and barriers for dislocation motion as a function of atomic radius ratio and the presence of point defects such as vacancies. For this purpose, a series of Laves phases with different radius ratios and increased vacancy density will be investigated. Methodologically, nanomechanical testing, electron microscopy and atomistic simulations will be used. Based on these results, we will develop phase-specific as well as generalised defect phase mechanism diagrams.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1394: Structural and Chemical Atomic Complexity: From Defect Phase Diagrams to Material Properties
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Heads: Professorin Sandra Korte-Kerzel, Ph.D.; Dr.-Ing. Zhuocheng Xie