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Lattice strain evolution during creep in single-crystal superalloys

Abstract:

In situ neutron diffraction studies are carried out to characterize the micromechanical deformation occurring during tensile creep of a typical single-crystal nickel-based superalloy, CMSX-4. The loading responses of the matrix γ phase and the precipitate γ′ are distinct. Moreover, the behaviour in the tertiary creep regime (in which the γ′ phase remains intact) is qualitatively different from that in the primary creep regime (when γ′ is sheared). In tertiary creep, initial deformation of the...

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
Journal:
ACTA MATERIALIA
Volume:
60
Issue:
6-7
Pages:
2729-2738
Publication date:
2012-04-05
DOI:
ISSN:
1359-6454
URN:
uuid:37f17573-5be0-45b0-abbc-e43ed7efb274
Source identifiers:
369677
Local pid:
pubs:369677
Language:
English
Keywords:

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