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Prediction of crystallographic cracking planes in single-crystal nickel-base superalloys
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-1688-9732
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
Siemens Ind Turbomachinery AB, Sweden.
Siemens Ind Turbomachinery AB, Sweden.
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2018 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 196, p. 206-223Article in journal (Refereed) Published
Abstract [en]

The inherent anisotropy of single-crystal nickel-base superalloys brings many difficulties in terms of modelling, evaluation and prediction of fatigue crack growth. Two models to predict on which crystallographic plane cracking will occur is presented. The models are based on anisotropic stress intensity factors resolved on crystallographic slip planes calculated in a three-dimensional finite-element context. The developed models have been compared to experiments on two different test specimen geometries. The results show that a correct prediction of the crystallographic cracking plane can be achieved. This knowledge is of great interest for the industry and academia to better understand and predict crack growth in single-crystal materials.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2018. Vol. 196, p. 206-223
Keywords [en]
Single-crystal nickel-base superalloys; Anisotropy; Fracture mechanics; Stress intensity factor; Crystallographic cracking
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:liu:diva-148380DOI: 10.1016/j.engfracmech.2018.04.047ISI: 000432704300014OAI: oai:DiVA.org:liu-148380DiVA, id: diva2:1219026
Note

Funding Agencies|Swedish Energy Agency; Siemens Industrial Turbomachinery AB through the Research Consortium of Materials Technology for Thermal Energy Processes [KME-702]

Available from: 2018-06-15 Created: 2018-06-15 Last updated: 2019-09-23

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The full text will be freely available from 2020-05-05 15:21
Available from 2020-05-05 15:21

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CiteExportLink to record
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  • apa
  • harvard1
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Language
  • de-DE
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  • nn-NB
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