Volume 82, Number 4, May 2008
|Number of page(s)||5|
|Published online||15 May 2008|
Phase transition with non-deterministic nature in the Ni3Al0.45V0.50 alloy
Research Department, NISSAN ARC, LTD. - Yokosuka, Kanagawa 237-0061, Japan
2 Department of Photonic and Electronic Systems, Waseda University - Shinjuku, Tokyo 169-8555, Japan
Corresponding author: email@example.com
Accepted: 7 April 2008
We demonstrate a thermodynamic state change dominated by a non-thermodynamic variable found in the Ni3Al0.45V0.50 alloy. Specifically, the L12 L12 + D022 evolution, which is a sub-phenomenon of the fcc L12 + D022 phase transition, takes place only when lattice defects are introduced to more than a certain critical density in the L12 diffusion field. Because the defect density changes along with the variation in the thermodynamic path, the path variation can alter the evolved state even under an identical thermodynamic condition. This path dependence of the state change shows the non-deterministic (chaotic) nature of the phase transition.
PACS: 05.70.-a – Thermodynamics / 64.70.kd – Metals and alloys / 64.75.Op – Phase separation and segregation in alloying
© EPLA, 2008
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