Influence of Environment on Creep Properties of MC2 Single Crystal Superalloy at 1050°C AND 1150°C

Sébastien Dryepondt; Eric Andrieu; Daniel Monceau; Fabrice Crabos; Cyril Vernault

doi:10.1002/9781118788035.ch17

Influence of Environment on Creep Properties of MC2 Single Crystal Superalloy at 1050°C AND 1150°C

Sébastien Dryepondt, Eric Andrieu, Daniel Monceau, Fabrice Crabos, Cyril Vernault

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

In order to reveal the effect of oxidation on thin blade walls a new machine allowing tests up to 1250°C under controlled atmosphere has been designed. First creep test results on MC2 single crystal superalloy point out the decrease of creep rate under argon hydrogenated at 1150°C, compared with the value obtained under synthetic dry air. This effect of oxidation was attributed to the growth of a protective oxide scale preventing from vacancy flux toward the alloy. It results in slowing down creep mechanisms controlled by diffusion and therefore dislocation motion and microstructure evolution. No effect was visible at 1050°C, 200 MPa which indicates that creep mechanisms may not be the same at 1150 °C than at 1050°C.

Original language	English
Title of host publication	Materials Lifetime Science & Engineering
Publisher	John Wiley and Sons Inc.
Pages	173-180
Number of pages	8
ISBN (Electronic)	9781118788035
ISBN (Print)	0873395441, 9781118000427
DOIs	https://doi.org/10.1002/9781118788035.ch17
State	Published - Sep 30 2013
Externally published	Yes

Keywords

Creep test
High temperature cycles
Hydrogenated argon
Single crystal superalloy
Thermocouples location

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10.1002/9781118788035.ch17

Cite this

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title = "Influence of Environment on Creep Properties of MC2 Single Crystal Superalloy at 1050°C AND 1150°C",

abstract = "In order to reveal the effect of oxidation on thin blade walls a new machine allowing tests up to 1250°C under controlled atmosphere has been designed. First creep test results on MC2 single crystal superalloy point out the decrease of creep rate under argon hydrogenated at 1150°C, compared with the value obtained under synthetic dry air. This effect of oxidation was attributed to the growth of a protective oxide scale preventing from vacancy flux toward the alloy. It results in slowing down creep mechanisms controlled by diffusion and therefore dislocation motion and microstructure evolution. No effect was visible at 1050°C, 200 MPa which indicates that creep mechanisms may not be the same at 1150 °C than at 1050°C.",

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author = "S{\'e}bastien Dryepondt and Eric Andrieu and Daniel Monceau and Fabrice Crabos and Cyril Vernault",

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T1 - Influence of Environment on Creep Properties of MC2 Single Crystal Superalloy at 1050°C AND 1150°C

AU - Dryepondt, Sébastien

AU - Andrieu, Eric

AU - Monceau, Daniel

AU - Crabos, Fabrice

AU - Vernault, Cyril

PY - 2013/9/30

Y1 - 2013/9/30

N2 - In order to reveal the effect of oxidation on thin blade walls a new machine allowing tests up to 1250°C under controlled atmosphere has been designed. First creep test results on MC2 single crystal superalloy point out the decrease of creep rate under argon hydrogenated at 1150°C, compared with the value obtained under synthetic dry air. This effect of oxidation was attributed to the growth of a protective oxide scale preventing from vacancy flux toward the alloy. It results in slowing down creep mechanisms controlled by diffusion and therefore dislocation motion and microstructure evolution. No effect was visible at 1050°C, 200 MPa which indicates that creep mechanisms may not be the same at 1150 °C than at 1050°C.

AB - In order to reveal the effect of oxidation on thin blade walls a new machine allowing tests up to 1250°C under controlled atmosphere has been designed. First creep test results on MC2 single crystal superalloy point out the decrease of creep rate under argon hydrogenated at 1150°C, compared with the value obtained under synthetic dry air. This effect of oxidation was attributed to the growth of a protective oxide scale preventing from vacancy flux toward the alloy. It results in slowing down creep mechanisms controlled by diffusion and therefore dislocation motion and microstructure evolution. No effect was visible at 1050°C, 200 MPa which indicates that creep mechanisms may not be the same at 1150 °C than at 1050°C.

KW - Creep test

KW - High temperature cycles

KW - Hydrogenated argon

KW - Single crystal superalloy

KW - Thermocouples location

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M3 - Chapter

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BT - Materials Lifetime Science & Engineering

PB - John Wiley and Sons Inc.

ER -

Influence of Environment on Creep Properties of MC2 Single Crystal Superalloy at 1050°C AND 1150°C

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Keywords

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