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High-temperature crack growth in a Ni-base superalloy during sustained load

Abstract:

The high-temperature sustained load crack growth behaviour of a Ni-base superalloy was investigated using a combination of mechanical testing in controlled atmosphere, fractographical and microanalytical investigations, and finite element modelling. The results show that the local crack front geometry is un-even on two scales - jaggedness on the scale of 100. μm was observed in all specimens, whereas mm-scale waviness could occasionally be observed. The jaggedness can be explained by a percol...

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Publication status:
Published

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Publisher copy:
10.1016/j.msea.2014.04.102

Authors


Hornqvist, M More by this author
Viskari, L More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Stiller, K More by this author
Publisher:
Elsevier Ltd
Journal:
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume:
609
Pages:
131-140
Publication date:
2014-07-15
DOI:
ISSN:
0921-5093
URN:
uuid:34d8f688-6b1a-4dee-92f7-d7e5dbc552fa
Source identifiers:
465844
Local pid:
pubs:465844

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