Fan, Jing ; Rao, Wei ; Qiao, Junwei ; Liaw, P. K. ; Şopu, Daniel ; Kiener, Daniel ; Eckert, Jürgen ; Kang, Guozheng ; Wu, Yucheng (2020)
Achieving work hardening by forming boundaries on the nanoscale in a Ti-based metallic glass matrix composite.
In: Journal of Materials Science & Technology, 50
doi: 10.1016/j.jmst.2020.02.036
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Achieving work hardening in metallic glass matrix composites (MGMCs) is the key to the extensive use of these attractive materials in structural and functional applications. In this study, we investigated the formation of nanoscale boundaries resulted from the interaction between matrix and dendrites, which favors the work-hardening deformation in an in-situ Ti41Zr32Ni6Ta7Be14 MGMC with β-Ti dendrites in a glassy matrix at room temperature. The microstructures of samples after tension were observed by high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The work-hardening mechanism of the present composites involves: (1) appearance of dense dislocation walls (DDWs), (2) proliferation of shear bands, (3) formation of boundaries on the nanoscale, and (4) interactions between hard and soft phases. A theoretical model combined with experimental data reveals the deformation mechanisms in the present work, proving that the in-situ dendrites with outstanding hardening ability in the glass matrix can provide the homogeneous deformation under tensile loading at room temperature.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Fan, Jing ; Rao, Wei ; Qiao, Junwei ; Liaw, P. K. ; Şopu, Daniel ; Kiener, Daniel ; Eckert, Jürgen ; Kang, Guozheng ; Wu, Yucheng |
| Art des Eintrags: | Bibliographie |
| Titel: | Achieving work hardening by forming boundaries on the nanoscale in a Ti-based metallic glass matrix composite |
| Sprache: | Englisch |
| Publikationsjahr: | 19 März 2020 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Materials Science & Technology |
| Jahrgang/Volume einer Zeitschrift: | 50 |
| DOI: | 10.1016/j.jmst.2020.02.036 |
| Kurzbeschreibung (Abstract): | Achieving work hardening in metallic glass matrix composites (MGMCs) is the key to the extensive use of these attractive materials in structural and functional applications. In this study, we investigated the formation of nanoscale boundaries resulted from the interaction between matrix and dendrites, which favors the work-hardening deformation in an in-situ Ti41Zr32Ni6Ta7Be14 MGMC with β-Ti dendrites in a glassy matrix at room temperature. The microstructures of samples after tension were observed by high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The work-hardening mechanism of the present composites involves: (1) appearance of dense dislocation walls (DDWs), (2) proliferation of shear bands, (3) formation of boundaries on the nanoscale, and (4) interactions between hard and soft phases. A theoretical model combined with experimental data reveals the deformation mechanisms in the present work, proving that the in-situ dendrites with outstanding hardening ability in the glass matrix can provide the homogeneous deformation under tensile loading at room temperature. |
| Freie Schlagworte: | Metallic glass matrix composites, Plastic deformation, Work hardening, Dense dislocation walls, Nanoscale boundaries |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung |
| Hinterlegungsdatum: | 12 Apr 2022 05:38 |
| Letzte Änderung: | 12 Apr 2022 05:38 |
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