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Dynamic recrystallization behaviors of a Mg-4Y-2Nd-0.2Zn-0.5Zr alloy and the resultant mechanical properties after hot compression

Zhang, Zhirou, Yang, Xuyue, Xiao, Zhenyu, Wang, Jun, Zhang, Duxiu, Liu, Chuming and Sakai, Taku 2016, Dynamic recrystallization behaviors of a Mg-4Y-2Nd-0.2Zn-0.5Zr alloy and the resultant mechanical properties after hot compression, Materials and design, vol. 97, pp. 25-32, doi: 10.1016/j.matdes.2016.02.072.

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Title Dynamic recrystallization behaviors of a Mg-4Y-2Nd-0.2Zn-0.5Zr alloy and the resultant mechanical properties after hot compression
Author(s) Zhang, Zhirou
Yang, Xuyue
Xiao, Zhenyu
Wang, Jun
Zhang, Duxiu
Liu, Chuming
Sakai, Taku
Journal name Materials and design
Volume number 97
Start page 25
End page 32
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-05-05
ISSN 0264-1275
1873-4197
Keyword(s) Science & Technology
Technology
Materials Science, Multidisciplinary
Materials Science
Precipitation particle
Hot compression
Microstructure
Dynamic recrystallization
Microtexture
Mechanical properties
MAGNESIUM ALLOY
PRECIPITATION
TEXTURE
DEFORMATION
EVOLUTION
WE43
AZ31
Summary The development behaviors of ultrafine grains (UFGs) due to continuous dynamic recrystallization (cDRX) were investigated in hot compression of a Mg-4Y-2Nd-0.2Zn-0.5Zr alloy pretreated in solution and subsequently peak-aging. In the aging sample containing statically precipitated particles (SPPs), the occurrence of cDRX starts to take place at medium to high strains, and finally a stable size of UFGs are fully developed in a whole volume. In the as-solution sample with no SPPs, by contrast, the size of UFGs evolved increases rapidly at lower strains, slowly at medium strains and then finally shows a bimodal distribution in high strain. In the latter, smaller grains accompanying with an incomplete formation of UFGs are developed by any effect of dynamically precipitated particles (DPPs). The microtexture evolved is effectively randomized in the regions of UFGs, leading to the formation of a weaker texture. The tensile elongation of the aging sample, with SPPs and fully developed UFGs, was around 17.4%. This was much higher than that of the as-solution one, with no SPPs and incompletely developed UFGs, that was 11.8%, which might result from the more randomized texture due to fully developed UFGs.
Language eng
DOI 10.1016/j.matdes.2016.02.072
Field of Research 0912 Materials Engineering
0913 Mechanical Engineering
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 ©2016, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083668

Document type: Journal Article
Collection: Institute for Frontier Materials
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