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1999 | 96 | 1 | 153-160
Article title

Kinetics of "order-order" Relaxations in Ni_{3}Al Studied by Computer Simulation

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EN
Abstracts
EN
The experimental investigations of "order-order" kinetics in Ni_{3} Al-based L1_{2}-ordered intermetallic compounds revealed the relaxation curves composed of two parallel processes considerably differing in relaxation rates. A simple Ising-type model based on a vacancy mechanism of atomic jumps was used to carry the Monte Carlo simulations of long-range-order relaxations in a binary A_{3}B system with L1_{2}-type superstructure. The simulated relaxation curves fitted weighted sums of two exponentials with significantly different relaxation times. It was found out that the fast relaxation process is controlled by the dynamics of the minority B-atom jumps.
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Contributors
author
  • Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
author
  • Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
author
  • GEMME, I.P.C.M.S., 23 rue du Loess, 67037 Strasbourg, France
  • GEMME, I.P.C.M.S., 23 rue du Loess, 67037 Strasbourg, France
author
  • Institut für Materialphysik, Universität Wien, Strudlhofgasse 4, 1090 Wien, Austria
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv96z113kz
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