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Stress corrosion cracking behavior of Alloy 600 in high temperature water

Description: SCC susceptibility of Alloy 600 in deaerated water at 360 C (statically loaded U-bend specimens) is dependent on microstructure and whether the material was cold-worked and annealed (CWA) or hot-worked and annealed (HWA). All cracking was intergranular, and materials lacking grain boundary carbides were most susceptible to SCC initiation. CWA tubing materials are more susceptible to SCC initiation than HWA ring-rolled forging materials with similar microstructures (optical metallography). In CW… more
Date: July 1, 1995
Creator: Webb, G.L. & Burke, M.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fatigue strain-life behavior of carbon and low-alloy steels, austenitic stainless steels, and Alloy 600 in LWR environments

Description: The existing fatigue strain vs. life (S-N) data, foreign and domestic, for carbon and low-alloy steels, austenitic stainless steels, and Alloy 600 used in the construction of nuclear power plant components have been compiled and categorized according to material, loading, and environmental conditions. Statistical models have been developed for estimating the effects of the various service conditions on the fatigue life of these materials. The results of a rigorous statistical analysis have been… more
Date: August 1, 1995
Creator: Keisler, J.; Chopra, O. K. & Shack, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Integrated modeling and characterization of local crack chemistry

Description: The MULTEQ computer program has become an industry wide tool which can be used to calculate the chemical composition in a flow occluded region as the solution within concentrates due to a local boiling process. These results can be used to assess corrosion concerns in plant equipment such as steam generators. Corrosion modeling attempts to quantify corrosion assessments by accounting for the mass transport processes involved in the corrosion mechanism. MULTEQ has played an ever increasing role … more
Date: December 31, 1995
Creator: Savchik, J.A. & Burke, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermally activated dislocation creep model for primary water stress corrosion cracking of NiCrFe alloys

Description: There is a growing awareness that awareness that environmentally assisted creep plays an important role in integranular stress corrosion cracking (IGSCC) of NiCrFe alloys in the primary coolant water environment of a pressurized water reactor (PWR). The expected creep mechanism is the thermally activated glide of dislocations. This mode of deformation is favored by the relatively low temperature of PWR operation combined with the large residual stresses that are most often identified as respons… more
Date: December 31, 1995
Creator: Hall, M.M., Jr
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Prediction of pure water stress corrosion cracking (PWSCC) in nickel base alloys using crack growth rate models

Description: The Ford/Andresen slip dissolution SCC model, originally developed for stainless steel components in BWR environments, has been applied to Alloy 600 and Alloy X-750 tested in deaerated pure water chemistry. A method is described whereby the crack growth rates measured in compact tension specimens can be used to estimate crack growth in a component. Good agreement was found between model prediction and measured SCC in X-750 threaded fasteners over a wide range of temperatures, stresses, and mate… more
Date: February 22, 1995
Creator: Thompson, C. D.; Krasodomski, H. T.; Lewis, N. & Makar, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmentally assisted cracking in light water reactors. Semiannual report, April 1994--September 1994, Volume 19

Description: This report summarizes work performed by Argonne National Laboratory (ANL) on fatigue and environmentally assisted cracking (EAC) in light water reactors from April to September 1994. Topics that have been investigated include (a) fatigue of carbon and low-alloy steel used in piping and reactor pressure vessels, (b) EAC of austenitic stainless steels (SSs) and Alloy 600, and (c) irradiation-assisted stress corrosion cracking (IASCC) of Type 304 SS. Fatigue tests have been conducted on A106-Gr B… more
Date: September 1, 1995
Creator: Chopra, O. K.; Chung, H. M. & Gavenda, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling of grain boundary stresses in Alloy 600

Description: Corrosive environments combined with high stress levels and susceptible microstructures can cause intergranular stress corrosion cracking (IGSCC) of Alloy 600 components on both primary and secondary sides of pressurized water reactors. One factor affecting the IGSCC is intergranular carbide precipitation controlled by heat treatment of Alloy 600. This study is concerned with analysis of elastic stress fields in vicinity of M{sub 7}C{sub 3} and M{sub 23}C{sub 6} carbides precipitated in the mat… more
Date: April 1995
Creator: Kozaczek, K. J.; Sinharoy, A.; Ruud, C. O. & Mcllree, A. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modeling of stress distributions on the microstructural level in Alloy 600

Description: Stress distribution in a random polycrystalline material (Alloy 600) was studied using a topologically correct microstructural model. Distributions of von Mises and hydrostatic stresses at the grain vertices, which could be important in intergranular stress corrosion cracking, were analyzed as functions of microstructure, grain orientations and loading conditions. Grain size, shape, and orientation had a more pronounced effect on stress distribution than loading conditions. At grain vertices th… more
Date: April 1995
Creator: Kozaczek, K. J.; Petrovic, B. G.; Ruud, C. O. & Mcllree, A. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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