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Prediction of crystallographic cracking planes in single-crystal nickel-base superalloys
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- Busse, Christian, 1989- (author)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Palmert, Frans (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Sjodin, B. (author)
- Siemens Ind Turbomachinery AB, Sweden
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- (creator_code:org_t)
- Elsevier, 2018
- 2018
- English.
- In: Engineering Fracture Mechanics. - : Elsevier. - 0013-7944 .- 1873-7315. ; 196, s. 206-223
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Single-crystal nickel-base superalloys; Anisotropy; Fracture mechanics; Stress intensity factor; Crystallographic cracking
Publication and Content Type
- ref (subject category)
- art (subject category)
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