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Combined in situ neutron diffraction and acoustic emission of twin nucleation & twin growth in extruded ZM20 Mg alloy

Muránsky, O., Barnett, M. R., Carr, D. G., Vogel, S. and Oliver, E. C. 2010, Combined in situ neutron diffraction and acoustic emission of twin nucleation & twin growth in extruded ZM20 Mg alloy, Materials science forum, vol. 652, pp. 149-154.

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Title Combined in situ neutron diffraction and acoustic emission of twin nucleation & twin growth in extruded ZM20 Mg alloy
Formatted title Combined in situ neutron diffraction and acoustic emission of twin nucleation & twin growth in extruded ZM20 Mg alloy
Author(s) Muránsky, O.
Barnett, M. R.
Carr, D. G.
Vogel, S.
Oliver, E. C.
Journal name Materials science forum
Volume number 652
Start page 149
End page 154
Total pages 6
Publisher Trans Tech Publications
Place of publication Stafa-Zurich, Switzerland
Publication date 2010-05-20
ISSN 0255-5476
1422-6375
Keyword(s) magnesium
deformation twinning
twin nucleation
neutron diffraction
acoustic emission
Summary In the present work in situ neutron diffraction and acoustic emission were used concurrently to study deformation twinning in two ZM20 Mg alloys with significantly different grain sizes at room temperature. The combination of these techniques allows differentionation between the twin nucleation and the twin growth mechanisms. It is shown, that yielding and immediate post-yielding plasticity in compression is governed primarily by twin nucleation, whereas the plasticity at higher strains is governed by twin growth. The current results further suggest that yielding by twinning happens in a slightly different manner in the fine-grained as compared to the coarse-grained alloy.
Language eng
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861199 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©(2010), Trans Tech Publications, Switzerland
Persistent URL http://hdl.handle.net/10536/DRO/DU:30029970

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
School of Engineering
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Created: Fri, 10 Sep 2010, 14:42:32 EST by Sandra Dunoon