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THERMO-MECHANICAL FATIGUE CRACK GROWTH MODELLING IN A NI-BASED SUPERALLOY SUBJECTED TO SUSTAINED LOAD
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-8304-0221
2015 (English)In: PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 7A, ASME Press, 2015, no V07AT28A006Conference paper (Refereed)Text
Abstract [en]

Thermo-mechanical fatigue (TMF) crack growth modelling as been conducted on Inconel 718 with dwell time at maximum;ad. A history dependent damage model taking dwell damage uto account, developed under isothermal conditions, has been xtended for TMF conditions. Parameter determination for the lodel is carried out on isothermal load controlled tests at 55050 C for surface cracks, which later have been used to extrapole parameters used for TMF crack growth. Further, validation the developed model is conducted on a notched specimen sub?cted to strain control at 50-550 C. Satisfying results are gained ithin reasonable scatter level compared for test and simulated umber of cycles to failure.

Place, publisher, year, edition, pages
ASME Press, 2015. no V07AT28A006
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:liu:diva-129514DOI: 10.1115/GT2015-42820ISI: 000375810700016ISBN: 978-0-7918-5676-5OAI: oai:DiVA.org:liu-129514DiVA: diva2:940029
Conference
ASME Turbo Expo: Turbine Technical Conference and Exposition
Available from: 2016-06-20 Created: 2016-06-20 Last updated: 2016-06-20

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Storgärds, ErikSimonsson, KjellSjöström, SörenMoverare, Johan
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Solid MechanicsFaculty of Science & EngineeringEngineering Materials
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