|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||I-52: The Deformation Behavior of Mg-2Zn Alloy Sheet Containing Oxygen Atoms
||Seung Won Kang, Dognhyun Bae
|On-Site Speaker (Planned)
||Seung Won Kang
The effect of the interstitial oxygen atoms in the magnesium-zinc binary alloy on the grain refinement during annealing treatment and the deformation behavior enhances the failure of elongation. Mg-Zn binary alloy contained randomly distributed oxygen atoms in matrix. And Mg-Zn alloy sheets are given reduction of 25% per pass during rolling. Submicron-grains formed on the micro-grains act additional deformation systems by competitive stress. Unidirectional tensile tests were conducted at room temperature with differential initial strain rate on hot-rolled Mg-2Zn and Mg-O-2Zn alloy sheets, and deformation behavior was investigated from the effect of grain size. The yield point drop is clearly detected at room temperature increased with decrease strain rate in Mg-O-2Zn alloy sheet; in contrast, Mg-2Zn alloy sheet is not detected yield point drop. And Mg-O-2Zn alloy sheet of elongation to failure is enhanced. This phenomenon occurs due to interstitial oxygen that is source of recrystallization formed submicron-size grains.