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http://dx.doi.org/10.12656/jksht.2019.32.1.1

Effect of Strain Rate on Microstructure Formation Behavior of M1 Magnesium Alloy During High-temperature Deformation  

Lee, Kyujung (Marine Convergence Design Co-work, Pukyong National University)
Kim, Kwonhoo (Department of Metallurgical Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.32, no.1, 2019 , pp. 1-11 More about this Journal
Abstract
In this study, microstructure evolution and crystallographic orientation are investigated under various deformation conditions in M1 magnesium alloy. M1 magnesium ingot was rolled at 673 K with the rolling reduction of 30%. The compression test specimens were machined out from rolled plate, and then the specimens were annealed at 823 K for 1h. Uniaxial compression tests were conducted at 723 K and under the strain rate ranging from $5.0{\times}10^{-4}s^{-1}$ to $5.0{\times}10^{-2}s^{-1}$ up to a true strain of -1.0. For observation of crystal orientation distribution, EBSD measurement was performed. Occurrence of the dynamic recrystallization and grain boundary migration were confirmed in all case of the specimens. The distribution of the grains is not uniformed in the experimental conditions.
Keywords
M1 magnesium alloy; High-temperature deformation; Dynamic recrystallization;
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