Electronic hybridisation implications for the damage-tolerance of thin film metallic glasses.
A paramount challenge in materials science is to design damage-tolerant glasses. Poisson's ratio is commonly used as a criterion to gauge the brittle-ductile transition in glasses. However, our data, as well as results in the literature, are in conflict with the concept of Poisson's ratio serving as a universal parameter for fracture energy. Here, we identify the electronic structure fingerprint associated with damage tolerance in thin film metallic glasses. Our correlative theoretical and experimental data reveal that the fraction of bonds stemming from hybridised states compared to the overall bonding can be associated with damage tolerance in thin film metallic glasses.
Materials Chemistry, RWTH Aachen University, Kopernikusstr 10, D-52074 Aachen, Germany.
Volker
V
Schnabel
Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany.
B Nagamani
BN
Jaya
Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany.
Mathias
M
Köhler
Materials Chemistry, RWTH Aachen University, Kopernikusstr 10, D-52074 Aachen, Germany.
Denis
D
Music
Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany.
Christoph
C
Kirchlechner
Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany.
Gerhard
G
Dehm
Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany.
Dierk
D
Raabe
Materials Chemistry, RWTH Aachen University, Kopernikusstr 10, D-52074 Aachen, Germany.
Jochen M
JM
Schneider