TY - JOUR

T1 - Origin of strain hardening in monolithic metallic glasses

AU - Yuan, X.

AU - Şopu, D.

AU - Eckert, J.

N1 - Publisher Copyright: © 2021 American Physical Society.

PY - 2021/4/29

Y1 - 2021/4/29

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85105506179&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.103.L140107

DO - 10.1103/PhysRevB.103.L140107

M3 - Article

AN - SCOPUS:85105506179

VL - 103.2021

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 14

M1 - L140107

ER -