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Damage mechanisms o...
Damage mechanisms of a high-Cr single crystal superalloy during thermomechanical fatigue
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- Moverare, Johan, 1973- (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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- Johansson, Sten, 1948- (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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(creator_code:org_t)
- Elsevier, 2010
- 2010
- English.
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In: Materials Science & Engineering. - : Elsevier. - 0921-5093 .- 1873-4936. ; 527:3, s. 553-558
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The deformation and damage mechanisms arising during thermomechanical fatigue of a high-Cr single crystal superalloy have been investigated and a completely new failure mechanism involving recrystallization and oxidation has been discovered. The primary deformation mechanism is slip along the {1 1 1} planes. The deformation is highly localized to a number of bands, where recrystallization eventually occurs during the thermomechanical fatigue process. When the final failure occurs along these recrystallized bands it is accompanied by the formation of voids due to the presence of grain boundaries. The damage process is further enhanced by oxidation, since recrystallization occurs more easily in the γ′ depleted zone under the oxide layer.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Keyword
- Thermomechanical fatigue; Deformation mechanisms; Recrystallization; Single crystal superalloy; Oxidation
- Construction materials
- Konstruktionsmaterial
Publication and Content Type
- ref (subject category)
- art (subject category)
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