Şopu, D. ; Stukowski, A. ; Stoica, M. ; Scudino, S. (2017)
Atomic-Level Processes of Shear Band Nucleation in Metallic Glasses.
In: Physical Review Letters, 119 (19)
doi: 10.1103/PhysRevLett.119.195503
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The ability to control the plastic deformation of amorphous metals is based on the capacity to influence the percolation of the shear transformation zones (STZs). Despite the recent research progress, the mechanism of STZ self-assembly has so far remained elusive. Here, we identify the structural perturbation generated by an STZ in the surrounding material and show how such a perturbation triggers the activation of the neighboring STZ. The mechanism is based on the autocatalytic generation of successive strong strain and rotation fields, leading to STZ percolation and, ultimately, to the formation of a shear band.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Şopu, D. ; Stukowski, A. ; Stoica, M. ; Scudino, S. |
| Art des Eintrags: | Bibliographie |
| Titel: | Atomic-Level Processes of Shear Band Nucleation in Metallic Glasses |
| Sprache: | Englisch |
| Publikationsjahr: | 9 November 2017 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review Letters |
| Jahrgang/Volume einer Zeitschrift: | 119 |
| (Heft-)Nummer: | 19 |
| DOI: | 10.1103/PhysRevLett.119.195503 |
| URL / URN: | https://doi.org/10.1103/PhysRevLett.119.195503 |
| Kurzbeschreibung (Abstract): | The ability to control the plastic deformation of amorphous metals is based on the capacity to influence the percolation of the shear transformation zones (STZs). Despite the recent research progress, the mechanism of STZ self-assembly has so far remained elusive. Here, we identify the structural perturbation generated by an STZ in the surrounding material and show how such a perturbation triggers the activation of the neighboring STZ. The mechanism is based on the autocatalytic generation of successive strong strain and rotation fields, leading to STZ percolation and, ultimately, to the formation of a shear band. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 14 Nov 2017 08:53 |
| Letzte Änderung: | 14 Nov 2017 08:53 |
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