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Investigation of precipitate hardening of slip and twinning in Mg5%Zn by micropillar compression

Wang, Jiangting and Stanford, Nicole 2015, Investigation of precipitate hardening of slip and twinning in Mg5%Zn by micropillar compression, Acta materialia, vol. 100, pp. 53-63, doi: 10.1016/j.actamat.2015.08.012.

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Title Investigation of precipitate hardening of slip and twinning in Mg5%Zn by micropillar compression
Author(s) Wang, Jiangting
Stanford, Nicole
Journal name Acta materialia
Volume number 100
Start page 53
End page 63
Total pages 11
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-11
ISSN 1359-6454
Keyword(s) Magnesium alloy
Micropillar compression
Precipitates
Slip
Twinning
Summary A Mg-5%Zn alloy has been aged to form c-axis rod precipitates which are known to increase strength. Micropillar compression tests were carried out in the precipitate-free and aged samples to investigate the effects of these precipitates on twinning and slip in magnesium alloys. Basal slip, pyramidal slip and {101¯2} twinning were selectively activated by compressing micropillars in the [112¯3], [0 0 0 1] and [112¯0] orientations, respectively. It has been found that precipitation causes moderate hardening of the basal slip system, and also significantly increases the work hardening rate. The compression of [112¯0] initiated twinning, but the present experiments were dominated by twin nucleation, rather than growth. It was found that the effect of precipitation on twin nucleation was negligible. Precipitation had little effect on specimens compressed in the c-axis.
Language eng
DOI 10.1016/j.actamat.2015.08.012
Field of Research 091207 Metals and Alloy Materials
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:30078474

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Mon, 28 Sep 2015, 15:27:06 EST

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