|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Technology 2018
||The Recrystallization and Grain Growth Behavior of Unalloyed Mg and a Mg-Al Alloy
||Aeriel D. Murphy, John Allison
|On-Site Speaker (Planned)
||Aeriel D. Murphy
Static recrystallization, grain-size, and texture evolution were investigated using Electron Back-Scatter Diffraction (EBSD) in pure Mg and Mg-4%Al. Pure Mg samples of two grain sizes were used in this study: 45μm and 350μm. Static recrystallization, grain growth and texture evolution have been investigated on cylinders compressed uniaxially at room temperature and annealed at 150 to 400°C for 1-1000 minutes. The level of dynamic recrystallization in the as-received condition was also characterized in these materials. The experimental results showed that inhomogeneous nucleation created a two-stage nucleation process represented by two different Avrami exponents. Stage I involved rapid nucleation of recrystallized grains at high stored energy twins and grain boundaries and during Stage II nucleation continued slowly at low stored energy grain interiors. The influence of alloying and twinning on static recrystallization and grain growth kinetics have been quantified and will be discussed.