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. Attached Files Name Description MIMEType Size Downloads 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 orcid.org/0000-0002-1395-9814 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 Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Thu, 20 Aug 2015, 15:18:43 EST Fri, 21 Aug 2015, 05:12:52 EST Thu, 29 Oct 2015, 12:31:23 EST Fri, 30 Oct 2015, 05:08:35 EST Mon, 30 Nov 2015, 09:10:41 EST Thu, 03 Dec 2015, 13:05:50 EST Sat, 25 Nov 2017, 01:34:20 EST Filtered Full Citation counts:   Cited 29 times in TR Web of Science Cited 33 times in Scopus Search Google Scholar Access Statistics: 339 Abstract Views, 3 File Downloads  -  Detailed Statistics Created: Thu, 29 Oct 2015, 12:31:23 EST

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