Sos, Marcel ; Tiphene, Gabrielle ; Loubet, Jean-Luc ; Bruns, Sebastian ; Bruder, Enrico ; Durst, Karsten (2024)
Mechanical softening of CuX alloys at elevated temperatures studied via high temperature scanning indentation.
In: Materials & Design, 2024, 240
doi: 10.26083/tuprints-00027666
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
The thermal stability and temperature dependent hardness of ultrafine-grained Cu-alloys CuSn5 and CuZn5 after high pressure torsion are investigated using the high temperature scanning indentation (HTSI) method. Fast indentations are carried out during thermal cycling of the samples (heating-holding-cooling) to measure hardness and strain rate sensitivity as a function of temperature and time. The microstructures after each thermal cycle are investigated to characterize the coarsening behaviour of both alloys.
Results show that the thermal stability of the tested alloys can be expressed in terms of several temperature regimes: A fully stable regime, a transient regime in which growth of individual grains occurs, and finally a regime in which the microstructure is fully coarsened. The onset of grain growth is accompanied by high strain rate sensitivity on the order of 0.2–0.3. Furthermore, the obtained hardness and strain rate sensitivity values are in good agreement with continuous stiffness measurement (CSM) and strain rate jump (SRJ) experiments. This highlights the applicability of the HTSI method to the characterization of the thermomechanical properties of ultrafine-grained alloys.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Sos, Marcel ; Tiphene, Gabrielle ; Loubet, Jean-Luc ; Bruns, Sebastian ; Bruder, Enrico ; Durst, Karsten |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Mechanical softening of CuX alloys at elevated temperatures studied via high temperature scanning indentation |
| Sprache: | Englisch |
| Publikationsjahr: | 16 Juli 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2024 |
| Ort der Erstveröffentlichung: | Amsterdam [u.a.] |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials & Design |
| Jahrgang/Volume einer Zeitschrift: | 240 |
| Kollation: | 13 Seiten |
| DOI: | 10.26083/tuprints-00027666 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/27666 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | The thermal stability and temperature dependent hardness of ultrafine-grained Cu-alloys CuSn5 and CuZn5 after high pressure torsion are investigated using the high temperature scanning indentation (HTSI) method. Fast indentations are carried out during thermal cycling of the samples (heating-holding-cooling) to measure hardness and strain rate sensitivity as a function of temperature and time. The microstructures after each thermal cycle are investigated to characterize the coarsening behaviour of both alloys. Results show that the thermal stability of the tested alloys can be expressed in terms of several temperature regimes: A fully stable regime, a transient regime in which growth of individual grains occurs, and finally a regime in which the microstructure is fully coarsened. The onset of grain growth is accompanied by high strain rate sensitivity on the order of 0.2–0.3. Furthermore, the obtained hardness and strain rate sensitivity values are in good agreement with continuous stiffness measurement (CSM) and strain rate jump (SRJ) experiments. This highlights the applicability of the HTSI method to the characterization of the thermomechanical properties of ultrafine-grained alloys. |
| Freie Schlagworte: | Nanoindentation, High Temperature, Mechanical Properties, Ultrafine-grained microstructure, Strain rate sensitivity |
| ID-Nummer: | 112865 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-276666 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 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 Physikalische Metallkunde |
| Hinterlegungsdatum: | 16 Jul 2024 12:23 |
| Letzte Änderung: | 17 Jul 2024 08:33 |
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- Mechanical softening of CuX alloys at elevated temperatures studied via high temperature scanning indentation. (deposited 16 Jul 2024 12:23) [Gegenwärtig angezeigt]
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