Choi, In-Chul ; Lee, Dong-Hyun ; Ahn, Byungmin ; Durst, Karsten ; Kawasaki, Megumi ; Langdon, Terence G. ; Jang, Jae-il (2015)
Enhancement of strain-rate sensitivity and shear yield strength of a magnesium alloy processed by high-pressure torsion.
In: Scripta Materialia, 94
doi: 10.1016/j.scriptamat.2014.09.014
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A Mg-Zn-Zr alloy was processed by high-pressure torsion for up to 2 turns at room temperature to produce significant grain refinement together with enhanced plasticity and strength. Measurements were performed to determine the strain-rate sensitivity, shear yield strength and activation volume as a function of the processing conditions. The results suggest there is a significant contribution from grain boundary sliding to the flow process and the onset of plasticity is associated with heterogeneous dislocation nucleation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Choi, In-Chul ; Lee, Dong-Hyun ; Ahn, Byungmin ; Durst, Karsten ; Kawasaki, Megumi ; Langdon, Terence G. ; Jang, Jae-il |
| Art des Eintrags: | Bibliographie |
| Titel: | Enhancement of strain-rate sensitivity and shear yield strength of a magnesium alloy processed by high-pressure torsion |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Januar 2015 |
| Verlag: | PERGAMON-ELSEVIER SCIENCE LTD |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scripta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 94 |
| DOI: | 10.1016/j.scriptamat.2014.09.014 |
| Kurzbeschreibung (Abstract): | A Mg-Zn-Zr alloy was processed by high-pressure torsion for up to 2 turns at room temperature to produce significant grain refinement together with enhanced plasticity and strength. Measurements were performed to determine the strain-rate sensitivity, shear yield strength and activation volume as a function of the processing conditions. The results suggest there is a significant contribution from grain boundary sliding to the flow process and the onset of plasticity is associated with heterogeneous dislocation nucleation. |
| Freie Schlagworte: | Grain boundary sliding, High-pressure torsion, Magnesium alloy, Strain-rate sensitivity, Yielding |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 09 Mär 2015 08:49 |
| Letzte Änderung: | 25 Jan 2016 11:57 |
| PPN: | |
| Sponsoren: | Research at Hanyang University was supported in part by the HR Development program (No. 20134030200360) of the KETEP grant funded by the Korean government (MOTE) and in part by the NRF grant (No. 2013R1A1A2A10058551) funded by the Korean Government (MSIP), Work at Ajou University was supported by the Basic Science Research Program through NRF funded by MSIP (No. 2012R1A1A1012983)., Research in the UK was supported by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS. |
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