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Gradient structure produced by three roll planetary milling: numerical simulation and microstructural observations

Li Wang, Ya, Molotnikov, Andrey, Diez, Mathilde, Lapovok, Rimma, Kim, Hyoun-Ee, Tao Wang, Jing and Estrin, Yuri 2015, Gradient structure produced by three roll planetary milling: numerical simulation and microstructural observations, Materials science and engineering a, vol. 639, pp. 165-172, doi: 10.1016/j.msea.2015.04.078.

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Title Gradient structure produced by three roll planetary milling: numerical simulation and microstructural observations
Author(s) Li Wang, Ya
Molotnikov, Andrey
Diez, Mathilde
Lapovok, Rimma
Kim, Hyoun-Ee
Tao Wang, Jing
Estrin, Yuri
Journal name Materials science and engineering a
Volume number 639
Start page 165
End page 172
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-07-05
ISSN 0921-5093
1873-4936
Keyword(s) Copper rods
Gradient structure
PSW
Three roll planetary milling
Ultrafine grains
Summary In this study a gradient grain structure was produced by processing rod billets through three roll planetary milling (also known as PSW process). This kind of gradient structure is reported to provide an excellent combination of strength and ductility owing to an ultrafine-grained surface layer and a coarse-grained interior of the billet. Specifically, copper rod samples were subjected to up to six passes of PSW at room temperature. To study the evolution of the microstructure during the deformation, microhardness measurements and Electron Backscatter Diffraction (EBSD) analysis were performed after one, three and six passes. Additionally, the distributions of the equivalent stress during PSW and the equivalent strain after processing were studied by finite element analysis using the commercial software QFORM. The results showed the efficacy of PSW as a means of imparting a gradient ultrafine-grained structure to copper rods. A good correlation between the simulated equivalent strain distribution and the measured microhardness distribution was demonstrated.
Language eng
DOI 10.1016/j.msea.2015.04.078
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:30075944

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Thu, 29 Oct 2015, 12:31:23 EST

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