Chemical ordering and dislocation defect phases in ternary intermetallic phases (C02)

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

Project C02 focuses on Ni-Nb(Al,Cu) intermetallic phases and the challenge of experimentally identifying and separating similar intermetallic crystals. For this purpose, new EBSD analyses based on a Direct Electron Detector for intermetallic and defect phases will be developed in collaboration with A07n. In addition, the effect of local chemical ordering on dislocation defect phase transitions will be investigated. This includes the investigation of the effects of a deviating stoichiometry and a ternary alloy with Cu and Al in the Ni-Nb-µ phase, as well as the influence of elemental exchange in the Nb(Ni,Al)-C14 Laves phase.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1394: Structural and Chemical Atomic Complexity: From Defect Phase Diagrams to Material Properties
• Major Instrumentation: Direct electron detection EBSD Camera
• Instrumentation Group: 5140 Hilfsgeräte und Zubehör für Elektronenmikroskope
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Head: Professorin Sandra Korte-Kerzel, Ph.D.