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

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: Contribution to conference › Paper › 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
Pages	173-180
Number of pages	8
State	Published - 2003
Externally published	Yes
Event	Materials Lifetime: Science and Engineering - San Diego, CA, United States Duration: Mar 2 2003 → Mar 6 2003

Conference

Conference	Materials Lifetime: Science and Engineering
Country/Territory	United States
City	San Diego, CA
Period	03/2/03 → 03/6/03

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.",

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

year = "2003",

language = "English",

pages = "173--180",

note = "Materials Lifetime: Science and Engineering ; Conference date: 02-03-2003 Through 06-03-2003",

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TY - CONF

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 - 2003

Y1 - 2003

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.

UR - http://www.scopus.com/inward/record.url?scp=0037481206&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0037481206

SP - 173

EP - 180

T2 - Materials Lifetime: Science and Engineering

Y2 - 2 March 2003 through 6 March 2003

ER -

Influence of environment on creep properties of MC2 single crystal superalloy at 1050°C and 1150°C

Abstract

Conference

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