A Modeling Study of Cyclical Phase Transformations
| Periodical | Materials Science Forum (Volumes 475 - 479) |
|---|---|
| Main Theme | PRICM-5 |
| Edited by | Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie |
| Pages | 3081-3086 |
| DOI | 10.4028/www.scientific.net/MSF.475-479.3081 |
| Citation | Jong K. Lee, 2005, Materials Science Forum, 475-479, 3081 |
| Online since | January, 2005 |
| Authors | Jong K. Lee |
| Keywords | Free Energy Change, Mechanical Alloying (MA), Phase Transformation |
| Price | US$ 28,- |
Recent work has shown evidence of cyclical phase transformations taking place during mechanical alloying. Cyclical phase transformations resemble dynamic equilibrium in the sense that both equilibrium and non-equilibrium phases are simultaneously present during milling, but phase fractions vary during cyclical transformations. A brief thermodynamic and kinetic account is first discussed to establish the criteria for cyclical transformations. A two-dimensional molecular dynamic work is then presented to demonstrate cyclical phase transitions between an equilibrium and a non-equilibrium phase during mechanical alloying. A model binary crystal made of 57 Lennard-Jones atoms is studied to illustrate cyclical transitions between an equilibrium rhombus and a non-equilibrium square phase.
