The role of back stress caused by precipitates on {101-2} twinning in a Mg-6Zn alloy

Jain, J., Cizek, P., Poole, W. J. and Barnett, M. R. 2015, The role of back stress caused by precipitates on {101-2} twinning in a Mg-6Zn alloy, Materials science and engineering a, vol. 647, pp. 66-73, doi: 10.1016/j.msea.2015.08.091.

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Title The role of back stress caused by precipitates on {101-2} twinning in a Mg-6Zn alloy
Author(s) Jain, J.
Cizek, P.
Poole, W. J.
Barnett, M. R.ORCID iD for Barnett, M. R. orcid.org/0000-0001-8287-9044
Journal name Materials science and engineering a
Volume number 647
Start page 66
End page 73
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-10-28
ISSN 0921-5093
Keyword(s) Magnesium alloys
Precipitates
Twinning
TEM
VPSC
Back-stress
Summary In the present study, the effect of precipitate characteristics on {101-2} extension twinning have been studied in a Z6 magnesium alloy. A strongly textured Z6 alloy plate was mechanically tested in twinning dominated orientation in solution treated and aged states. Optical microscopy, transmission electron microscopy (TEM) and visco-plastic self consistent (VPSC) modelling are used to examine the effect of precipitate characteristics on twinning. The yield stress was observed to increase by ~80. MPa during ageing and it was estimated that CRSS for twinning increased by ~29. MPa based on VPSC simulations. The increment of twin system strengthening can be attributed to back stress generated by elastically deforming particles.
Language eng
DOI 10.1016/j.msea.2015.08.091
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0913 Mechanical Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078510

Document type: Journal Article
Collection: Institute for Frontier Materials
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