An evaluation of formability using micro-embossing on an ultrafine-grained magnesium AZ31 alloy processed by high-pressure torsionJie Xu, Guangnan Xing, Debin Shan, Bin Guo and Terence G. LangdonMATEC Web of Conferences, 21 (2015) 09005DOI: https://doi.org/10.1051/matecconf/20152109005