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Fatigue crack initi...
Fatigue crack initiation in a notched single-crystal superalloy component
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- Leidermark, Daniel (author)
- Linköpings universitet,Hållfasthetslära,Tekniska högskolan
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- Moverare, Johan (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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- Simonsson, Kjell (author)
- Linköpings universitet,Hållfasthetslära,Tekniska högskolan
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- Sjöström, Sören (author)
- Linköpings universitet,Hållfasthetslära,Tekniska högskolan
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- Johansson, Sten (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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(creator_code:org_t)
- Elsevier, 2010
- 2010
- English.
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In: Procedia Engineering. - : Elsevier. - 1877-7058. ; 2:1, s. 1067-1075
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https://doi.org/10.1...
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Abstract
Subject headings
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- In this paper, the fatigue crack initiation in notched single-crystal test specimens of material MD2 is investigated and analysed. A critical plane approach is adopted, in which the total strain ranges on the discrete slip planes are evaluated. Furthermore, a Coffin-Manson type of expression is used to describe the number of cycles to fatigue crack initiation. This relation is determined from a set of smooth test specimens loaded uniaxially in the [001], [011] and directions at 500 °C with Rε=−1. The numerical procedure is then applied to a series of experiments, in which notched single-crystal test specimens were exposed to uniaxial cyclic loading in the [001] direction at 500 °C with Rε=0.
Keyword
- Fatigue initiation; Low cycle fatigue; Critical plane approach; Single-crystal superalloy
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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