1. Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WK), Engelbert-Arnold-Str. 4, 76131 Karlsruhe, Germany
2. Otto von Guericke University, Institute for Materials and Joining Technology, Universitätsplatz 2, 39106 Magdeburg, Germany
3. Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Max-Planck-Str. 1, 21502 Geesthacht, Germany