Grain size effect on deformation twinning and de-twinning in a nanocrystalline Ni-Fe alloy
Ni, S., Wang, Y.B., Liao, X. Z., Alhajeri, S.N., Li, Hh. Q., Ringer, S. P., Langdon, T.G. and Zhu, Y.T. (2011) Grain size effect on deformation twinning and de-twinning in a nanocrystalline Ni-Fe alloy. Materials Science Forum, (667-669), 181-186. (doi:10.4028/www.scientific.net/MSF).
Download
Full text not available from this repository.
Description/Abstract
The effect of grain size on the deformation twinning and de-twinning in a nanocrystalline Ni-Fe alloy was investigated using transmission electron microscopy. Specimens with different grain sizes were obtained by severely deforming an electrochemically deposited nanocrystalline Ni-20wt.% Fe alloy using high-pressure torsion, which resulted in continuous grain growth from an average grain size of ~ 21 nm in the as-deposited material to ~ 72 nm for the highest strain applied in this study. Results show that deformation de-twinning occurs at very small grain sizes while deformation twinning takes place when the grain size is larger than ~ 45 nm. The mechanism of the observed grain size effect on twinning and de-twinning is briefly discussed.
| Item Type: | Article |
|---|---|
| ISSNs: | 1662-9752 (print) |
| Related URLs: | |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering |
| Item ID: | 187529 |
| Date Deposited: | 17 May 2011 09:58 |
| Last Modified: | 02 Mar 2012 12:56 |
| Contributors: | Ni, S. (Author) Wang, Y.B. (Author) Liao, X. Z. (Author) Alhajeri, S.N. (Author) Li, Hh. Q. (Author) Ringer, S. P. (Author) Langdon, T.G. (Author) Zhu, Y.T. (Author) |
| Date: | 2011 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/187529 |
Actions (login required)
 |
View Item |
