RETRACTED: The die structure design of equal channel angular extrusion for AZ31 magnesium alloy based on three-dimensional finite element method

This article has been retracted at the request of the Editor-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).Reason: The authors have plagiarized part of a paper that had already appeared in J. Mater. Process. Technol., 209 (2009) 89–95, doi:10.1016/j.jmatprotec.2008.01.031 and images from the text have been taken from Acta Mater., 55 (2007) 4769–4779, doi:10.1016/j.actamat.2007.04.043 and manipulated to generate the results. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and we apologize to readers of the journal that this was not detected during the submission process.