Abstract
To overcome the brittleness of metallic glasses (MGs), their structure, chemistry, or loading conditions are usually controlled. Here, the local stress state in MGs was modulated without affecting their structure. The elastically designed MG heterostructures provide enhanced ductility together with strain hardening during loading. The stress heterogeneity leads to shear band multiplication that consequently enhances the macroscopic ductility of MGs. In addition, the residual compressive stress significantly increases the strength of the glass and is responsible for the observed strain hardening.
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | L140107 |
| Fachzeitschrift | Physical Review B |
| Jahrgang | 103.2021 |
| Ausgabenummer | 14 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - 29 Apr. 2021 |
Bibliographische Notiz
Funding Information:The authors acknowledge financial support from the China Scholarship Council (CSC, Grant No. 201806220096), Deutsche Forschungsgemeinschaft (DFG) (Grant No. SO 1518/1-1), and the European Research Council under the ERC Advanced Grant INTELHYB (Grant No. ERC-2013-ADG-340025). The authors are grateful for the computing time granted with the Lichtenberg high-performance computer of Technische Universität Darmstadt and the high-performance cluster of Montanuniversität Leoben.
Publisher Copyright:
© 2021 American Physical Society.