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On the possibility of rhenium clustering in nickel-based superalloys

Abstract:

In order to elucidate the role of this element in superalloy metallurgy, the binding energy of Re-Re pairs and the stability of small Re clusters in the nickel face-centred cubic (fcc) lattice is investigated using ab initio density functional theory. It is shown that the formation of Re-Re nearest neighbour pairs is energetically unfavourable, and that this repulsive energy is dramatically reduced as soon as the solute atoms move further apart from one another. Furthermore, small nearest nei...

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Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
Journal:
ACTA MATERIALIA
Volume:
60
Issue:
6-7
Pages:
2866-2872
Publication date:
2012-04-01
DOI:
ISSN:
1359-6454
Source identifiers:
369676
Language:
English
Keywords:
Pubs id:
pubs:369676
UUID:
uuid:3edd3fc0-f568-4cbb-a52f-2c8fa0e209b6
Local pid:
pubs:369676
Deposit date:
2013-11-16

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