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- Lee, Ki-Suk
- Creative Laboratory for Advanced Spin Systems (CLASS)
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High-strain-rate superplasticity of fine-grained Mg-6Zn-0.5Zr alloy subjected to low-temperature indirect extrusion
- Author(s)
- Kim, Beomcheol, Kim, Jong Chan, Lee, Sooseok, Lee, Ki-Suk, Lee, Jung Gu, Park, Sung Soo
- Issued Date
- 2017-12
- Citation
- SCRIPTA MATERIALIA, v.141, pp.138 - 142
- Abstract
- A commercial Mg-6Zn-0.5Zr alloy was subjected to low-temperature indirect extrusion for grain refinement and the tensile properties of the extruded alloy at 250 degrees C were investigated. After extrusion, the alloy showed finely recrystallized grains with an average size of 1.6 mu m. High-strain-rate superplasticity was observed in the fine-grained alloy, which exhibited a tensile elongation of up to 800% at a strain rate of 0.01 s(-1). Experimental results demonstrating the occurrence of grain boundary sliding during the high-strain-rate superplastic deformation are presented. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- ISSN
- 1359-6462
- Keyword (Author)
- Extrusion, Grain refinement, High-strain-rate superplasticity, Magnesium alloy
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