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Cluster Shape Changes During Low Temperature Annealing

Windsor, Colin G. / Barron, Ruth M. / Russell, John R.

Abstract Recent in situ small angle neutron scattering experiments have been performed during the thermal ageing of an evaporated Al-7.5w%Cr-lw%Fe alloy.1 The sequence of scattering patterns observed suggested that radical changes in cluster shape were occuring during ageing. This paper describes the Monte Carlo simulations on model binary alloys which confirmed this interpretation of the data. An explanation is given in terms of the minimum coordination number of atoms in linear, planar and spherical clusters. New simulations are presented on the formation of Ll2 structure clusters in a face centred cubic lattice.

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Cluster Shape Changes During Low Temperature Annealing

Windsor, Colin G. / Barron, Ruth M. / Russell, John R.

Abstract Recent in situ small angle neutron scattering experiments have been performed during the thermal ageing of an evaporated Al-7.5w%Cr-lw%Fe alloy.1 The sequence of scattering patterns observed suggested that radical changes in cluster shape were occuring during ageing. This paper describes the Monte Carlo simulations on model binary alloys which confirmed this interpretation of the data. An explanation is given in terms of the minimum coordination number of atoms in linear, planar and spherical clusters. New simulations are presented on the formation of Ll2 structure clusters in a face centred cubic lattice.

Cluster Shape Changes During Low Temperature Annealing

Windsor, Colin G. / Barron, Ruth M. / Russell, John R.

Abstract Recent in situ small angle neutron scattering experiments have been performed during the thermal ageing of an evaporated Al-7.5w%Cr-lw%Fe alloy.1 The sequence of scattering patterns observed suggested that radical changes in cluster shape were occuring during ageing. This paper describes the Monte Carlo simulations on model binary alloys which confirmed this interpretation of the data. An explanation is given in terms of the minimum coordination number of atoms in linear, planar and spherical clusters. New simulations are presented on the formation of Ll2 structure clusters in a face centred cubic lattice.

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Title:

Cluster Shape Changes During Low Temperature Annealing

Contributors:

Windsor, Colin G. (author) / Barron, Ruth M. (author) / Russell, John R. (author)

Published in:

Dynamics of Ordering Processes in Condensed Matter ; 263-272

Publication date:

1988-01-01

Size:

10 pages

ISBN:

978-1-4612-8295-2 , 978-1-4613-1019-8

DOI:

https://doi.org/10.1007/978-1-4613-1019-8_35

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Coordination Number , Neighbour Interaction , Cluster Shape , Cluster Size Distribution , Cluster Correlation Physics , Condensed Matter Physics , Characterization and Evaluation of Materials

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