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Short-range ordering in face-centered-cubic Ni3Al

Okamoto, J. K. and Ahn, C. C. and Fultz, B. (1995) Short-range ordering in face-centered-cubic Ni3Al. Journal of Applied Physics, 77 (9). pp. 4380-4383. ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:OKAjap95

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Abstract

Films of fcc Ni3Al with suppressed short-range order (SRO) were prepared by physical vapor deposition of Ni3Al onto room-temperature substrates. Extended electron energy-loss fine-structure spectra were obtained from both Al K and Ni L23 edges. After the samples were annealed for various times at 150 °C, a moderate growth of SRO was observed in the first-nearest-neighbor environments of both the Al and Ni atoms. As prepared, these fcc Ni3Al materials, and presumably others having similar heat evolutions as measured by differential scanning calorimetry, have a high degree of chemical disorder.


Item Type:Article
Additional Information:©1995 American Institute of Physics. (Received 25 March 1994; accepted 9 January 1995) We thank Dr. P. Rez for providing the software used to calculate the electron-scattering cross sections, and Dr. D. H. Pearson for his help with the calculations. This research was supported by the U. S. Dept. of Energy under Contract No. DE-FGO3-86ER45270.
Subject Keywords:NICKEL ALLOYS; ALUMINIUM ALLOYS; FCC LATTICES; ORDER–DISORDER TRANSFORMATIONS; THIN FILMS; PHYSICAL VAPOR DEPOSITION; STRUCTURAL CHEMICAL ANALYSIS; FINE STRUCTURE; ANNEALING; SHORT–RANGE ORDER; EEL SPECTROSCOPY
Record Number:CaltechAUTHORS:OKAjap95
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:OKAjap95
Alternative URL:http://dx.doi.org/10.1063/1.359463
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1805
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:18 Feb 2006
Last Modified:26 Dec 2012 08:46

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