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
Article
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2015 |
| Creators: | Choi, In-Chul ; Lee, Dong-Hyun ; Ahn, Byungmin ; Durst, Karsten ; Kawasaki, Megumi ; Langdon, Terence G. ; Jang, Jae-il |
| Type of entry: | Bibliographie |
| Title: | Enhancement of strain-rate sensitivity and shear yield strength of a magnesium alloy processed by high-pressure torsion |
| Language: | English |
| Date: | 1 January 2015 |
| Publisher: | PERGAMON-ELSEVIER SCIENCE LTD |
| Journal or Publication Title: | Scripta Materialia |
| Volume of the journal: | 94 |
| URL / URN: | http://dx.doi.org/10.1016/j.scriptamat.2014.09.014 |
| 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. |
| Uncontrolled Keywords: | Grain boundary sliding, High-pressure torsion, Magnesium alloy, Strain-rate sensitivity, Yielding |
| Identification Number: | doi:10.1016/j.scriptamat.2014.09.014 |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 09 Mar 2015 08:49 |
| Last Modified: | 25 Jan 2016 11:57 |
| PPN: | |
| Funders: | 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. |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum