Origin of strain hardening in monolithic metallic glasses

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

Externe Organisationseinheiten

  • Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
  • Technische Universität Darmstadt

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.

Details

OriginalspracheEnglisch
AufsatznummerL140107
FachzeitschriftPhysical Review B
Jahrgang103.2021
Ausgabenummer14
DOIs
StatusVeröffentlicht - 29 Apr. 2021