Nandam, Sree Harsha ; Schwaiger, Ruth ; Kobler, Aaron ; Kübel, Christian ; Wang, Chaomin ; Ivanisenko, Yulia ; Hahn, Horst (2024)
Controlling shear band instability by nanoscale heterogeneities in metallic nanoglasses.
In: Journal of Materials Research, 2021, 36 (14)
doi: 10.26083/tuprints-00023579
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
Strain localization during plastic deformation drastically reduces the shear band stability in metallic glasses, ultimately leading to catastrophic failure. Therefore, improving the plasticity of metallic glasses has been a long-standing goal for several decades. In this regard, nanoglass, a novel type of metallic glass, has been proposed to exhibit differences in short and medium range order at the interfacial regions, which could promote the formation of shear transformation zones. In the present work, by introducing heterogeneities at the nanoscale, both crystalline and amorphous, significant improvements in plasticity are realized in micro-compression tests. Both amorphous and crystalline dispersions resulted in smaller strain bursts during plastic deformation. The yield strength is found to increase significantly in Cu–Zr nanoglasses compared to the corresponding conventional metallic glasses. The reasons for the mechanical behavior and the importance of nanoscale dispersions to tailor the properties is discussed in detail.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Nandam, Sree Harsha ; Schwaiger, Ruth ; Kobler, Aaron ; Kübel, Christian ; Wang, Chaomin ; Ivanisenko, Yulia ; Hahn, Horst |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Controlling shear band instability by nanoscale heterogeneities in metallic nanoglasses |
| Sprache: | Englisch |
| Publikationsjahr: | 24 September 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Ort der Erstveröffentlichung: | Berlin |
| Verlag: | Springer International Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Materials Research |
| Jahrgang/Volume einer Zeitschrift: | 36 |
| (Heft-)Nummer: | 14 |
| DOI: | 10.26083/tuprints-00023579 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23579 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Strain localization during plastic deformation drastically reduces the shear band stability in metallic glasses, ultimately leading to catastrophic failure. Therefore, improving the plasticity of metallic glasses has been a long-standing goal for several decades. In this regard, nanoglass, a novel type of metallic glass, has been proposed to exhibit differences in short and medium range order at the interfacial regions, which could promote the formation of shear transformation zones. In the present work, by introducing heterogeneities at the nanoscale, both crystalline and amorphous, significant improvements in plasticity are realized in micro-compression tests. Both amorphous and crystalline dispersions resulted in smaller strain bursts during plastic deformation. The yield strength is found to increase significantly in Cu–Zr nanoglasses compared to the corresponding conventional metallic glasses. The reasons for the mechanical behavior and the importance of nanoscale dispersions to tailor the properties is discussed in detail. |
| Freie Schlagworte: | Amorphous, Composite, Nanoscale, Physical vapor deposition (PVD), Ductility |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-235796 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung |
| Hinterlegungsdatum: | 24 Sep 2024 09:33 |
| Letzte Änderung: | 25 Sep 2024 08:42 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Controlling shear band instability by nanoscale heterogeneities in metallic nanoglasses. (deposited 24 Sep 2024 09:33) [Gegenwärtig angezeigt]
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