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      The influence of twinning on plastic constitutive description of a magnesium alloy

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          Abstract

          During uniaxial compression tests of a twin-roll cast AZ31 alloy, the orientation induced anisotropy only lay in the initial strain range, which was attributed to the different twinning systems that were involved. Regardless of the initial orientation, contraction twinning always played an important role at higher strain range, especially with higher strain rate and lower temperature. At temperature higher than 300 °C, dynamic recrystallization would dominate. A single modified Arrhenius equation ˙ = [ sinh ( α σ ) ] n exp ( Q / R T ) was used to describe the flow behavior for all experimental conditions. The n value was found to be higher at lower temperature when compression twinning was prevalent. Meanwhile the deformation activation energy was somewhat lower, which was attributed to the twinning induced softening effect.

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          Most cited references 12

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          On the mechanism of hot deformation

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            Twinning and the ductility of magnesium alloys

             M.R. Barnett (2007)
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              Dynamic recrystallisation and the development of microstructure during the high temperature deformation of magnesium

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                Author and article information

                Journal
                ijmr
                International Journal of Materials Research
                Carl Hanser Verlag
                1862-5282
                2195-8556
                10 December 2018
                : 109
                : 12
                : 1092-1098
                Affiliations
                a School of Materials Science and Engineering, Hefei University of Technology, Hefei, P.R. China
                b National–Local Joint Research Center of Non-ferrous Metal Materials and Processing Technology, Hefei, P.R. China
                Author notes
                [* ] Correspondence address, Zhen Zhang, School of Materials Science and Engineering, Hefei University of Technology, Tunxi Road, Hefei 230001, P.R. China, Tel.: +860551-62901362, E-mail: turkeyzz1984@ 123456gmail.com , Web: http://mse.hfut.edu.cn/
                Article
                MK111717
                10.3139/146.111717
                © 2018, Carl Hanser Verlag, München
                Page count
                References: 17, Pages: 7
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