Creep of nickel base alloys in high temperature water

Y. Yi; G. S. Was; J. Cookson; J. S. Fish; S. A. Attanasio; H. T. Krasodomski; W. W. Wilkening

doi:10.1002/9781118787618.ch28

Creep of nickel base alloys in high temperature water

Y. Yi, G. S. Was, J. Cookson, J. S. Fish, S. A. Attanasio, H. T. Krasodomski, W. W. Wilkening

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

12 Scopus citations

Abstract

Creep tests were performed to compare the creep behavior of commercial nickel-base alloys as a function of stress, temperature and the environment. Alloy 600 (nominal and low carbon) and the precipitation strengthened alloys 625 and X-750 in the AH and HTH conditions were tested at constant load in deaerated primary water containing 40-60cc/kg hydrogen. The stress dependence of Alloy 600 in the mill-annealed (MA) condition was obtained at 337°C and 360°C. The stress exponent was determined to be between 3 and 9. The activation energy for creep was 64 kcal/mole. Both results support a dislocation climb controlled mechanism of creep in commercial Alloy 600. The creep results were compared to the known SCC performance of these alloys. The creep rates of the LC alloy are higher on average than those with nominal carbon level. Intergranular cracking occurred only in the X-750 AH alloy and the precipitation treated LC A600 alloy. These results support earlier work that showed that low carbon alloys are more susceptible to creep and IG cracking than are high carbon alloys. However, these results also show a smaller influence of a water environment on the creep rate of commercial, creep-resistant alloys compared to high purity alloys.

Original language	British English
Title of host publication	Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -
Editors	S. Bruemmer, P. Ford, G. Was
Publisher	Minerals, Metals and Materials Society
Pages	269-277
Number of pages	9
ISBN (Print)	0873394755, 9780873394758
DOIs	https://doi.org/10.1002/9781118787618.ch28
State	Published - 1999
Event	Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors - - New Portbeach, CA, United States Duration: 1 Aug 1999 → 5 Aug 1999

Publication series

Name	Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -

Conference

Conference	Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -
Country/Territory	United States
City	New Portbeach, CA
Period	1/08/99 → 5/08/99

Access to Document

10.1002/9781118787618.ch28

Cite this

Yi, Y., Was, G. S., Cookson, J., Fish, J. S., Attanasio, S. A., Krasodomski, H. T., & Wilkening, W. W. (1999). Creep of nickel base alloys in high temperature water. In S. Bruemmer, P. Ford, & G. Was (Eds.), Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors - (pp. 269-277). (Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -). Minerals, Metals and Materials Society. https://doi.org/10.1002/9781118787618.ch28

Yi, Y. ; Was, G. S. ; Cookson, J. et al. / Creep of nickel base alloys in high temperature water. Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -. editor / S. Bruemmer ; P. Ford ; G. Was. Minerals, Metals and Materials Society, 1999. pp. 269-277 (Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -).

@inproceedings{bf2d9c0c2ad147229d923fa4e818c273,

title = "Creep of nickel base alloys in high temperature water",

abstract = "Creep tests were performed to compare the creep behavior of commercial nickel-base alloys as a function of stress, temperature and the environment. Alloy 600 (nominal and low carbon) and the precipitation strengthened alloys 625 and X-750 in the AH and HTH conditions were tested at constant load in deaerated primary water containing 40-60cc/kg hydrogen. The stress dependence of Alloy 600 in the mill-annealed (MA) condition was obtained at 337°C and 360°C. The stress exponent was determined to be between 3 and 9. The activation energy for creep was 64 kcal/mole. Both results support a dislocation climb controlled mechanism of creep in commercial Alloy 600. The creep results were compared to the known SCC performance of these alloys. The creep rates of the LC alloy are higher on average than those with nominal carbon level. Intergranular cracking occurred only in the X-750 AH alloy and the precipitation treated LC A600 alloy. These results support earlier work that showed that low carbon alloys are more susceptible to creep and IG cracking than are high carbon alloys. However, these results also show a smaller influence of a water environment on the creep rate of commercial, creep-resistant alloys compared to high purity alloys.",

author = "Y. Yi and Was, {G. S.} and J. Cookson and Fish, {J. S.} and Attanasio, {S. A.} and Krasodomski, {H. T.} and Wilkening, {W. W.}",

year = "1999",

doi = "10.1002/9781118787618.ch28",

language = "British English",

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series = "Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -",

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booktitle = "Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -",

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note = "Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors - ; Conference date: 01-08-1999 Through 05-08-1999",

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Yi, Y, Was, GS, Cookson, J, Fish, JS, Attanasio, SA, Krasodomski, HT & Wilkening, WW 1999, Creep of nickel base alloys in high temperature water. in S Bruemmer, P Ford & G Was (eds), Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -. Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -, Minerals, Metals and Materials Society, pp. 269-277, Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -, New Portbeach, CA, United States, 1/08/99. https://doi.org/10.1002/9781118787618.ch28

Creep of nickel base alloys in high temperature water. / Yi, Y.; Was, G. S.; Cookson, J. et al.
Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -. ed. / S. Bruemmer; P. Ford; G. Was. Minerals, Metals and Materials Society, 1999. p. 269-277 (Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -).

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

TY - GEN

T1 - Creep of nickel base alloys in high temperature water

AU - Yi, Y.

AU - Was, G. S.

AU - Cookson, J.

AU - Fish, J. S.

AU - Attanasio, S. A.

AU - Krasodomski, H. T.

AU - Wilkening, W. W.

PY - 1999

Y1 - 1999

N2 - Creep tests were performed to compare the creep behavior of commercial nickel-base alloys as a function of stress, temperature and the environment. Alloy 600 (nominal and low carbon) and the precipitation strengthened alloys 625 and X-750 in the AH and HTH conditions were tested at constant load in deaerated primary water containing 40-60cc/kg hydrogen. The stress dependence of Alloy 600 in the mill-annealed (MA) condition was obtained at 337°C and 360°C. The stress exponent was determined to be between 3 and 9. The activation energy for creep was 64 kcal/mole. Both results support a dislocation climb controlled mechanism of creep in commercial Alloy 600. The creep results were compared to the known SCC performance of these alloys. The creep rates of the LC alloy are higher on average than those with nominal carbon level. Intergranular cracking occurred only in the X-750 AH alloy and the precipitation treated LC A600 alloy. These results support earlier work that showed that low carbon alloys are more susceptible to creep and IG cracking than are high carbon alloys. However, these results also show a smaller influence of a water environment on the creep rate of commercial, creep-resistant alloys compared to high purity alloys.

AB - Creep tests were performed to compare the creep behavior of commercial nickel-base alloys as a function of stress, temperature and the environment. Alloy 600 (nominal and low carbon) and the precipitation strengthened alloys 625 and X-750 in the AH and HTH conditions were tested at constant load in deaerated primary water containing 40-60cc/kg hydrogen. The stress dependence of Alloy 600 in the mill-annealed (MA) condition was obtained at 337°C and 360°C. The stress exponent was determined to be between 3 and 9. The activation energy for creep was 64 kcal/mole. Both results support a dislocation climb controlled mechanism of creep in commercial Alloy 600. The creep results were compared to the known SCC performance of these alloys. The creep rates of the LC alloy are higher on average than those with nominal carbon level. Intergranular cracking occurred only in the X-750 AH alloy and the precipitation treated LC A600 alloy. These results support earlier work that showed that low carbon alloys are more susceptible to creep and IG cracking than are high carbon alloys. However, these results also show a smaller influence of a water environment on the creep rate of commercial, creep-resistant alloys compared to high purity alloys.

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SN - 9780873394758

T3 - Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -

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BT - Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -

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Yi Y, Was GS, Cookson J, Fish JS, Attanasio SA, Krasodomski HT et al. Creep of nickel base alloys in high temperature water. In Bruemmer S, Ford P, Was G, editors, Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -. Minerals, Metals and Materials Society. 1999. p. 269-277. (Proceedings of the Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors -). doi: 10.1002/9781118787618.ch28

Creep of nickel base alloys in high temperature water

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