In-Situ Defect Spectroscopy of Al Welds During Mechanical Load Using a Scanning Positron Microbeam

• Applicant: Professor Dr. Christoph Hugenschmidt
• Subject Area: Mechanical Properties of Metallic Materials and their Microstructural Origins ; Experimental Condensed Matter Physics ; Synthesis and Properties of Functional Materials
• Term: from 2021 to 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 461170118

• Final Report Year: 2025

Final Report Abstract

The correlation between atomic-level defects and material properties are crucial for improving technical applications based on Al alloys. Within this project, we studied the vacancy formation under mechanical load of various Al alloys by using depth-resolved positron annihilation spectroscopy.

Publications

• Surface and near-surface positron annihilation spectroscopy at very low positron energy. Journal of Instrumentation, 19(11), P11026.
  Mathes, Lucian; Suhr, Maximilian; Burwitz, Vassily V.; Russell, Danny R.; Vohburger, Sebastian & Hugenschmidt, Christoph