Sökning: L773:0927 0256 OR L773:1879 0801 >
Modeling of the hig...
Modeling of the high temperature behaviour of IN792 in gas turbine hot parts
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- Almroth, Per, 1975- (författare)
- Linköpings universitet,Tekniska högskolan,Hållfasthetslära
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Hasselqvist, Magnus (författare)
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- Sjöström, Karl Henning Sören, 1947- (författare)
- Linköpings universitet,Tekniska högskolan,Institutionen för konstruktions- och produktionsteknik
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- Simonsson, Kjell, 1964- (författare)
- Linköpings universitet,Tekniska högskolan,Hållfasthetslära
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(creator_code:org_t)
- 2002
- 2002
- Engelska.
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Ingår i: Computational materials science. - 0927-0256 .- 1879-0801. ; 25:3, s. 305-315
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The material parameters for two isothermal viscoplastic models with deliberately limited sets of material parameters have been estimated. The models are to describe the behaviour of the nickel based superalloy IN792 in a gas turbine hot part application. The models are based on a power law flow equation and the state variable used is backstress. The model calibration is done by least-squares optimization using non-standard constitutive tests that are aimed at describing relevant component conditions. The constitutive tests give information about the kinematic hardening effects for the backstress evolution equations, while secondary creep data provides stress versus inelastic strain rate information for the flow equation. All tests are uniaxial and isothermal. With the estimated parameter sets the models give relatively good fits to the data. The results suggest that the models can be used to describe the high temperature behaviour of IN792. ⌐ 2002 Elsevier Science B.V. All rights reserved.
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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