Anomalous nonlinear damping in metallic glasses: Signature of elasticity breakdown

7Citations
Citations of this article
16Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Solid materials, whether crystalline or glasses, are characterized by their elasticity. Generally, elasticity is independent of the probing strain if it is not exceeding the yielding point. Here, by contrast, we experimentally capture a pronounced strain-dependent elasticity in metallic glasses, as manifested by nonlinear mechanical damping in the apparent elastic deformation regime (∼1/100 of the yielding strain). Normal damping behaviors recover at higher temperatures but still below the glass transition. Atomistic simulations reproduce these features and reveal that they could be related to avalanche-like local structural instabilities. Our findings demonstrate that the standard elasticity is not held for metallic glasses at low temperatures and plastic events can be triggered at small perturbations. These results are consistent with previous simulations of model glasses and a scenario of hierarchical free-energy landscape of mean-field theory.

References Powered by Scopus

Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals

6567Citations
N/AReaders
Get full text

Nanoalloys: From theory to applications of alloy clusters and nanoparticles

3264Citations
N/AReaders
Get full text

The conflicts between strength and toughness

2965Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Elastic avalanches reveal marginal behavior in amorphous solids

38Citations
N/AReaders
Get full text

Elastic interactions of plastic events in strained amorphous solids before yield

14Citations
N/AReaders
Get full text

Complexity of plastic instability in amorphous solids: Insights from spatiotemporal evolution of vibrational modes

11Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Peng, S. X., Zhang, C., Yang, C., Li, R., Zhang, T., Liu, L., … Samwer, K. (2019). Anomalous nonlinear damping in metallic glasses: Signature of elasticity breakdown. Journal of Chemical Physics, 150(11). https://doi.org/10.1063/1.5088184

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 4

31%

Researcher 4

31%

Professor / Associate Prof. 3

23%

Lecturer / Post doc 2

15%

Readers' Discipline

Tooltip

Materials Science 6

55%

Physics and Astronomy 3

27%

Chemistry 1

9%

Engineering 1

9%

Save time finding and organizing research with Mendeley

Sign up for free