The fundamental correlations such as crack growth rate (CGR) versus K for primary water stress corrosion cracking (PWSCC) of nickel-base alloys in simulated pressurized water reactor environments are quantified with the theoretical model based on the combination of crack tip mechanics and oxidation kinetics. Materials reliability program (MRP) proposed a CGR disposition curve in a report MRP 55 for PWSCC of thick-section Alloy 600 materials. This deterministic CGR equation has been adopted by Section XI Nonmandatory Appendix O of the ASME Boiler and Pressure Code for flaw evaluation. MRP also proposed a CGR disposition curve in a report MRP 115 for PWSCC of Alloy 82/182/132 weld metals. Stress intensity factor (K), temperature and thermal activation energy are included in both MRP 55 and MRP 115 reports. Both MRP 55 and MRP 115 are engineering-based. The results of mechanism-based modeling are compared with the screened experimental data for typical PWSCC systems of nickel-base alloys and the consistence is observed.
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April 2013
Research-Article
Deterministic Formulation of the Effect of Stress Intensity Factor on PWSCC of Ni-Base Alloys and Weld Metals
Tetsuo Shoji,
Tetsuo Shoji
1
e-mail: tshoji@rift.mech.tohoku.ac.jp
1Corresponding author.
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Chaoyang Fu
Chaoyang Fu
Fracture and Reliability Research Institute
,Faculty of Engineering
,Tohoku University
,Aramaki Aoba 6-6-10, Aoba-ku
,Sendai 980-8579
, Japan
Search for other works by this author on:
Tetsuo Shoji
e-mail: tshoji@rift.mech.tohoku.ac.jp
Chaoyang Fu
Fracture and Reliability Research Institute
,Faculty of Engineering
,Tohoku University
,Aramaki Aoba 6-6-10, Aoba-ku
,Sendai 980-8579
, Japan
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the Journal of Pressure Vessel Technology. Manuscript received July 4, 2011; final manuscript received June 9, 2012; published online March 18, 2013. Assoc. Editor: Xian-Kui Zhu.
J. Pressure Vessel Technol. Apr 2013, 135(2): 021402 (9 pages)
Published Online: March 18, 2013
Article history
Received:
July 4, 2011
Revision Received:
June 9, 2012
Citation
Lu, Z., Shoji, T., Xue, H., and Fu, C. (March 18, 2013). "Deterministic Formulation of the Effect of Stress Intensity Factor on PWSCC of Ni-Base Alloys and Weld Metals." ASME. J. Pressure Vessel Technol. April 2013; 135(2): 021402. https://doi.org/10.1115/1.4007471
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