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Journal article

High temperature fatigue crack growth in powder processed nickel based superalloy U720Li

Abstract:

Fatigue crack propagation at elevated temperatures (650 and 725°C) has been studied in a powder processed high strength nickel based superalloy, U720Li, in air and vacuum environments, using trapezoidal loading waveforms. Constant load (increasing ΔK) tests were used to generate daldN-ΔK curves, while interrupted constant ΔK tests were used to study crack propagation paths and mechanisms. At 650°C in air there is little effect of any dwell at maximum load while at 725°C such a dwell causes a ...

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Publication status:
Published

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Publisher copy:
10.1179/026708302225001840

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Journal:
MATERIALS SCIENCE AND TECHNOLOGY
Volume:
18
Issue:
3
Pages:
349-353
Publication date:
2002-03-05
DOI:
EISSN:
1743-2847
ISSN:
0267-0836
URN:
uuid:b44fe668-28ad-419b-837b-112d4797d35e
Source identifiers:
10246
Local pid:
pubs:10246
Language:
English

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