Nanoscale patterning of L12 chemical order in NI3AL alloy processed by energetic ions

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Abstract

We recently predicted that alloys forming chemical ordered phases at equilibrium can be forced into stable nanoscale patterns of chemical order by irradiation with energetic particles. In this paper we introduce a new method to identify reliably the transition boundary between patterning and disordered states. We have tested this prediction on the Ni3Al compound by combining molecular dynamics (MD) and kinetic Monte Carlo simulations. We use MD to simulate the disordered zones produced by IMeV Kr and 70KeV He ions. These zones are then incorporated into KMC simulations to reach long irradiation times. These simulations indicate that IMeV Kr ion irradiation can lead to patterning, whereas 70KeV He irradiation cannot. Experimentally, we propose to use HRTEM imaging to identify the patterning of chemical order in Ni3Al.

Original languageEnglish (US)
Title of host publicationProceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
EditorsJ.M. Howe, D.E. Laughlin, J.K. Lee, U. Dahmen, W.A. Soffa
Pages849-854
Number of pages6
Volume1
StatePublished - Dec 1 2005
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 - Phoenix, AZ, United States
Duration: May 29 2005Jun 3 2005

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
CountryUnited States
CityPhoenix, AZ
Period5/29/056/3/05

Keywords

  • Ion irradiation
  • L1
  • Patterning

ASJC Scopus subject areas

  • Engineering(all)

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    Ye, J., Li, Y., Averback, R. S., Bellon, P., & Zuo, J-M. (2005). Nanoscale patterning of L12 chemical order in NI3AL alloy processed by energetic ions. In J. M. Howe, D. E. Laughlin, J. K. Lee, U. Dahmen, & W. A. Soffa (Eds.), Proceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 (Vol. 1, pp. 849-854)