Yuan, Xudong ; Şopu, Daniel ; Song, Kaikai ; Eckert, Jürgen (2022)
Relaxation and Strain-Hardening Relationships in Highly Rejuvenated Metallic Glasses.
In: Materials, 2022, 15 (5)
doi: 10.26083/tuprints-00021024
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
One way to rejuvenate metallic glasses is to increase their free volume. Here, by randomly removing atoms from the glass matrix, free volume is homogeneously generated in metallic glasses, and glassy states with different degrees of rejuvenation are designed and further mechanically tested. We find that the free volume in the rejuvenated glasses can be annihilated under tensile or compressive deformation that consequently leads to structural relaxation and strain-hardening. Additionally, the deformation mechanism of highly rejuvenated metallic glasses during the uniaxial loading–unloading tensile tests is investigated, in order to provide a systematic understanding of the relaxation and strain-hardening relationship. The observed strain-hardening in the highly rejuvenated metallic glasses corresponds to stress-driven structural and residual stress relaxation during cycling deformation. Nevertheless, the rejuvenated metallic glasses relax to a more stable state but could not recover their initial as-cast state.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Yuan, Xudong ; Şopu, Daniel ; Song, Kaikai ; Eckert, Jürgen |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Relaxation and Strain-Hardening Relationships in Highly Rejuvenated Metallic Glasses |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| (Heft-)Nummer: | 5 |
| Kollation: | 10 Seiten |
| DOI: | 10.26083/tuprints-00021024 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/21024 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | One way to rejuvenate metallic glasses is to increase their free volume. Here, by randomly removing atoms from the glass matrix, free volume is homogeneously generated in metallic glasses, and glassy states with different degrees of rejuvenation are designed and further mechanically tested. We find that the free volume in the rejuvenated glasses can be annihilated under tensile or compressive deformation that consequently leads to structural relaxation and strain-hardening. Additionally, the deformation mechanism of highly rejuvenated metallic glasses during the uniaxial loading–unloading tensile tests is investigated, in order to provide a systematic understanding of the relaxation and strain-hardening relationship. The observed strain-hardening in the highly rejuvenated metallic glasses corresponds to stress-driven structural and residual stress relaxation during cycling deformation. Nevertheless, the rejuvenated metallic glasses relax to a more stable state but could not recover their initial as-cast state. |
| Freie Schlagworte: | metallic glass, molecular dynamics simulations, rejuvenation, relaxation, strain-hardening |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-210249 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung |
| Hinterlegungsdatum: | 11 Apr 2022 11:24 |
| Letzte Änderung: | 12 Apr 2022 05:18 |
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| Zugehörige Links: | |
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