Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys

Junhyun Kwon; Yong Sun Yi; Joung Soo Kim

Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys

Junhyun Kwon
, Yong Sun Yi
, Joung Soo Kim

SG Materials Team

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

4 Scopus citations

Abstract

Primary water stress corrosion cracking (PWSCC) is one of the main degradation processes of nickel-based alloys in the pressurized water reactor environments. This paper evaluates the effects of the mechanical and environmental parameters on the cracking behavior of Alloy 600 in a quantitative way. Based on two mechanistic models for SCC, including the slip oxidation (SO) and internal oxidation (10) mechanism, we have formulated the equations for the crack growth rate (CGR) calculation. The concept of a crack-tip strain rate was embedded into the CGR equation for the 10 model, as well as for the SO model, which enables us to predict the CGR. It is found that the proposed two CGR equations are of use in predicting the CGRs of Alloy 600 in high temperature water environments. Particularly, the use of oxygen diffusion rate embedded in the 10 model equation produces the comparable CGRs to the measured data. From the parametric study, the significance of the mechanical parameters on the cracking behavior was examined. Since a variation of the yield strength and the strain-hardening exponent of metals might enhance or reduce the CGR, it is of importance to accurately determine the mechanical parameters. In evaluating the effect of the water chemistry on the CGR, only the SO model equation was used since the IO model dose not take the water chemistry parameters into account at present.

Original language	British English
Title of host publication	Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors
Pages	661-668
Number of pages	8
State	Published - 2005
Event	12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors - Salt Lake City, UT, United States Duration: 14 Aug 2005 → 18 Aug 2005

Publication series

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

Conference

Conference	12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors
Country/Territory	United States
City	Salt Lake City, UT
Period	14/08/05 → 18/08/05

Keywords

Crack growth rate
Internal oxidation
Primary water stress corrosion cracking
Slip oxidation

Cite this

Kwon, J., Yi, Y. S., & Kim, J. S. (2005). Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys. In Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors (pp. 661-668). (Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors).

Kwon, Junhyun ; Yi, Yong Sun ; Kim, Joung Soo. / Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys. Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. 2005. pp. 661-668 (Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors).

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title = "Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys",

abstract = "Primary water stress corrosion cracking (PWSCC) is one of the main degradation processes of nickel-based alloys in the pressurized water reactor environments. This paper evaluates the effects of the mechanical and environmental parameters on the cracking behavior of Alloy 600 in a quantitative way. Based on two mechanistic models for SCC, including the slip oxidation (SO) and internal oxidation (10) mechanism, we have formulated the equations for the crack growth rate (CGR) calculation. The concept of a crack-tip strain rate was embedded into the CGR equation for the 10 model, as well as for the SO model, which enables us to predict the CGR. It is found that the proposed two CGR equations are of use in predicting the CGRs of Alloy 600 in high temperature water environments. Particularly, the use of oxygen diffusion rate embedded in the 10 model equation produces the comparable CGRs to the measured data. From the parametric study, the significance of the mechanical parameters on the cracking behavior was examined. Since a variation of the yield strength and the strain-hardening exponent of metals might enhance or reduce the CGR, it is of importance to accurately determine the mechanical parameters. In evaluating the effect of the water chemistry on the CGR, only the SO model equation was used since the IO model dose not take the water chemistry parameters into account at present.",

keywords = "Crack growth rate, Internal oxidation, Primary water stress corrosion cracking, Slip oxidation",

author = "Junhyun Kwon and Yi, \{Yong Sun\} and Kim, \{Joung Soo\}",

year = "2005",

language = "British English",

isbn = "9780873395953",

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

pages = "661--668",

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

note = "12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors ; Conference date: 14-08-2005 Through 18-08-2005",

}

Kwon, J, Yi, YS & Kim, JS 2005, Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys. in Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors, pp. 661-668, 12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors, Salt Lake City, UT, United States, 14/08/05.

Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys. / Kwon, Junhyun; Yi, Yong Sun; Kim, Joung Soo.
Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. 2005. p. 661-668 (Proceedings of the Twelfth International Conference 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 - Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys

AU - Kwon, Junhyun

AU - Yi, Yong Sun

AU - Kim, Joung Soo

PY - 2005

Y1 - 2005

N2 - Primary water stress corrosion cracking (PWSCC) is one of the main degradation processes of nickel-based alloys in the pressurized water reactor environments. This paper evaluates the effects of the mechanical and environmental parameters on the cracking behavior of Alloy 600 in a quantitative way. Based on two mechanistic models for SCC, including the slip oxidation (SO) and internal oxidation (10) mechanism, we have formulated the equations for the crack growth rate (CGR) calculation. The concept of a crack-tip strain rate was embedded into the CGR equation for the 10 model, as well as for the SO model, which enables us to predict the CGR. It is found that the proposed two CGR equations are of use in predicting the CGRs of Alloy 600 in high temperature water environments. Particularly, the use of oxygen diffusion rate embedded in the 10 model equation produces the comparable CGRs to the measured data. From the parametric study, the significance of the mechanical parameters on the cracking behavior was examined. Since a variation of the yield strength and the strain-hardening exponent of metals might enhance or reduce the CGR, it is of importance to accurately determine the mechanical parameters. In evaluating the effect of the water chemistry on the CGR, only the SO model equation was used since the IO model dose not take the water chemistry parameters into account at present.

AB - Primary water stress corrosion cracking (PWSCC) is one of the main degradation processes of nickel-based alloys in the pressurized water reactor environments. This paper evaluates the effects of the mechanical and environmental parameters on the cracking behavior of Alloy 600 in a quantitative way. Based on two mechanistic models for SCC, including the slip oxidation (SO) and internal oxidation (10) mechanism, we have formulated the equations for the crack growth rate (CGR) calculation. The concept of a crack-tip strain rate was embedded into the CGR equation for the 10 model, as well as for the SO model, which enables us to predict the CGR. It is found that the proposed two CGR equations are of use in predicting the CGRs of Alloy 600 in high temperature water environments. Particularly, the use of oxygen diffusion rate embedded in the 10 model equation produces the comparable CGRs to the measured data. From the parametric study, the significance of the mechanical parameters on the cracking behavior was examined. Since a variation of the yield strength and the strain-hardening exponent of metals might enhance or reduce the CGR, it is of importance to accurately determine the mechanical parameters. In evaluating the effect of the water chemistry on the CGR, only the SO model equation was used since the IO model dose not take the water chemistry parameters into account at present.

KW - Crack growth rate

KW - Internal oxidation

KW - Primary water stress corrosion cracking

KW - Slip oxidation

UR - https://www.scopus.com/pages/publications/33745218283

M3 - Conference contribution

AN - SCOPUS:33745218283

SN - 9780873395953

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

SP - 661

EP - 668

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

T2 - 12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors

Y2 - 14 August 2005 through 18 August 2005

ER -

Kwon J, Yi YS, Kim JS. Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys. In Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. 2005. p. 661-668. (Proceedings of the Twelfth International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors).

Evaluation of mechanical and environmental parameters affecting primary water stress corrosion cracking of nickel-based alloys

Abstract

Publication series

Conference

Keywords

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