Hostname: page-component-8448b6f56d-dnltx Total loading time: 0 Render date: 2024-04-24T20:49:10.295Z Has data issue: false hasContentIssue false
  • English
  • Français

Twining and Slip Activity in Magnesium <11-20> Single Crystal

Published online by Cambridge University Press:  31 January 2011

Gyu Seok Kim ,
Sangbong Yi ,
Yuanding Huang  and
Erica Lilleodden
Gyu Seok Kim
Affiliation:
qstone00@gmail.com, GKSS Research Center, Materials Mechanics, Institute of Materials Research, Geesthacht, Germany
Sangbong Yi
Affiliation:
sangbong.yi@gkss.de, GKSS Research Center, MagIC-Magnesium Innovation Center, Geesthacht, Germany
Yuanding Huang
Affiliation:
yuanding.huang@gkss.de, GKSS Research Center, MagIC-Magnesium Innovation Center, Geesthacht, Germany
Erica Lilleodden
Affiliation:
eric.lilleodden@scholarone.com, GKSS Research Center, Materials Mechanics, Institute of Materials Research, Geesthacht, Germany
Get access

Abstract

Uniaxial μ-compression tests have been performed on single crystal Mg with a <11-20> compression direction, an orientation unfavorable for basal slip. Results show that the early stages of deformation proceed via both twinning and dislocation plasticity. Twinning leads to a reorientation of the crystal favorable for basal slip, typically with the <2-1-1-3> aligned with the compression direction. At a critical strain a large strain burst occurs, and is associated with both rapid propagation of the twin and the activation of basal slip within the twin. Such a mechanistic picture of the deformation behavior is revealed through SEM, EBSD and TEM characterization of the deformation structures.

Keywords

stress/strain relationshipMgdislocations
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-FF05-03
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Kelley, E.W., Hosford, W.F., Trans. Metall. Soc. 242(1968) 5.Google Scholar
2 Obara, T., Yoshinga, H., Morozumi, S., Acta Mater. 21 (1973) 845.Google Scholar
3 Couret, A. ,Caillard, D., Acta Mater. 33 (1985) 1447.Google Scholar
4 Uchic, M. D., Dimiduk, D. M., Florando, J. N., Nix, W. D., Science 305 (2004) 986.Google Scholar
5 Uchic, M. D., Dimiduk, D. M., Mat. Sci. Eng. A 400-401 (2005) 268.Google Scholar
6 Norfleet, D.M., Dimiduk, D.M., Polasik, S.J., Uchic, M.D., Mills, M.J., Acta Mater. 56 (2008) 2988.Google Scholar
7 Greer, J. R. and Nix, W. D., Phys. Rev. B 73 (2006) 245410.Google Scholar
8 Volkert, C.V. and Lilleodden, E.T., Phil. Mag. 86 (2006) 5567.Google Scholar
9 Lilleodden, E.T., Scripta Mater. 62 (2010) 532.Google Scholar
10 Byer, C.M., Li, B., Cao, B., Ramesh, K.T., Scripta Mater. 62 (2010) 536.Google Scholar
11 Agnew, S.R., Duygulu, O., International Journal of Plasticity 21 (2005) 1161.Google Scholar
12 Song, S.G., Gray, G.T. III , Acta Materialia 43 (1995) 2338.Google Scholar
13 Yoo, M.H., Met Trans A 12A (1981) 409.Google Scholar