Stress corrosion cracking of candidate waste container materials : final report

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Book Synopsis Stress corrosion cracking of candidate waste container materials : final report by : J. Y. Park

Download or read book Stress corrosion cracking of candidate waste container materials : final report written by J. Y. Park and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Stress Corrosion Cracking of Candidate Waste Container Materials

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ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (242 download)

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Book Synopsis Stress Corrosion Cracking of Candidate Waste Container Materials by : P. S. Maiya

Download or read book Stress Corrosion Cracking of Candidate Waste Container Materials written by P. S. Maiya and published by . This book was released on 1990 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Stress Corrosion Cracking of Candidate Waste Container Materials

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Total Pages : 0 pages
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Book Synopsis Stress Corrosion Cracking of Candidate Waste Container Materials by :

Download or read book Stress Corrosion Cracking of Candidate Waste Container Materials written by and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six alloys have been selected as candidate container materials for the storage of high-level nuclear waste at the proposed Yucca Mountain site in Nevada. These materials are Type 304L stainless steel (SS), Type 316L SS, Incology 825, P-deoxidized Cu, Cu-30%Ni, and Cu-7% Al. The present program has been initiated to determine whether any of these materials can survive for 300 years in the site environment without developing through-wall stress corrosion cracks, and to assess the relative resistance of these materials to stress corrosion cracking (SCC). A series of slow-strain-rate tests (SSRTs) in simulated Well J-13 water which is representative of the groundwater present at the Yucca Mountain site has been completed, and crack-growth-rate (CGR) tests are also being conducted under the same environmental conditions. 13 refs., 60 figs., 22 tabs.

Stress Corrosion Cracking of Candidate Waste Container Materials ; Final Report

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Book Synopsis Stress Corrosion Cracking of Candidate Waste Container Materials ; Final Report by :

Download or read book Stress Corrosion Cracking of Candidate Waste Container Materials ; Final Report written by and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six alloys have been selected as candidate container materials for the storage of high-level nuclear waste at the proposed Yucca mountain site in Nevada. These materials are Type 304L stainless steel (SS). Type 316L SS, Incoloy 825, phosphorus-deoxidized Cu, Cu-30%Ni, and Cu-7%Al. The present program has been initiated to determine whether any of these materials can survive for 300 years in the site environment without developing through-wall stress corrosion cracks. and to assess the relative resistance of these materials to stress corrosion cracking (SCC)- A series of slow-strain-rate tests (SSRTs) and fracture-mechanics crack-growth-rate (CGR) tests was performed at 93°C and 1 atm of pressure in simulated J-13 well water. This water is representative, prior to the widespread availability of unsaturated-zone water, of the groundwater present at the Yucca Mountain site. Slow-strain-rate tests were conducted on 6.35-mm-diameter cylindrical specimens at strain rates of 10-−7 and 10−8 s−1 under crevice and noncrevice conditions. All tests were interrupted after nominal elongation strain of 1--4%. Scanning electron microscopy revealed some crack initiation in virtually all the materials, as well as weldments made from these materials. A stress- or strain-ratio cracking index ranks these materials, in order of increasing resistance to SCC, as follows: Type 304 SS

Localized Corrosion and Stress Corrosion Cracking of Candidate Materials for High-level Radioactive Waste Disposal Containers in the US

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Total Pages : pages
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Book Synopsis Localized Corrosion and Stress Corrosion Cracking of Candidate Materials for High-level Radioactive Waste Disposal Containers in the US by :

Download or read book Localized Corrosion and Stress Corrosion Cracking of Candidate Materials for High-level Radioactive Waste Disposal Containers in the US written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Container materials may undergo any of several modes of degradation in this environment, including: undesirable phase transformations due to lack of phase stability; atmospheric oxidation; general aqueous corrosion; pitting; crevice corrosion; intergranular stress corrosion cracking (IGSCC); and transgranular stress corrosion cracking (TGSCC). This paper is an analysis of data from the literature relevant to the pitting, crevice corrosion, and stress corrosion cracking (SCC) of these alloys. Though all three austenitic candidates have demonstrated pitting and crevice corrosion in chloride-containing environments, Alloy 825 has the greatest resistance to these forms of localized attack. Both types 304L and 316L stainless steels are susceptible to SCC in acidic chloride media. In contrast, SCC has not been documented for Alloy 825 under comparable conditions. Gamma irradiation has been found to enhance SCC of Types 304 and 304L stainless steels, but it has no detectable effect on the resistance of Alloy 825 to SCC. Furthermore, while microbiologically induced corrosion effects have been observed for 300-series stainless steels, nickel-based alloys such as Alloy 825 seem to be immune to such problems. Of the copper-based alloys, CDA 715 has the best overall resistance to localized attack. Its resistance to pitting is comparable to that of CDA 613 and superior to that of CDA 102. Observed rates of dealloying in CDA 715 are less than those observed in CDA 613 by orders of magnitude. The resistance of CDA 715 to SCC in tarnishing ammonical environments is comparable to that of CDA 102 and superior to that of CDA 613. Its resistance to SCC in nontarnishing ammonical environments is comparable to that of CDA 613 and superior to that of CDA 102. 22 refs., 8 figs., 4 tabs.

Localized Corrosion and Stress Corrosion Cracking of Candidate Materials for High-level Radioactive Waste Disposal Containers in the US

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ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Localized Corrosion and Stress Corrosion Cracking of Candidate Materials for High-level Radioactive Waste Disposal Containers in the US by : J. C. Farmer

Download or read book Localized Corrosion and Stress Corrosion Cracking of Candidate Materials for High-level Radioactive Waste Disposal Containers in the US written by J. C. Farmer and published by . This book was released on 1988 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Container materials may undergo any of several modes of degradation in this environment, including: undesirable phase transformations due to lack of phase stability; atmospheric oxidation; general aqueous corrosion; pitting; crevice corrosion; intergranular stress corrosion cracking (IGSCC); and transgranular stress corrosion cracking (TGSCC). This paper is an analysis of data from the literature relevant to the pitting, crevice corrosion, and stress corrosion cracking (SCC) of these alloys. Though all three austenitic candidates have demonstrated pitting and crevice corrosion in chloride-containing environments, Alloy 825 has the greatest resistance to these forms of localized attack. Both types 304L and 316L stainless steels are susceptible to SCC in acidic chloride media. In contrast, SCC has not been documented for Alloy 825 under comparable conditions. Gamma irradiation has been found to enhance SCC of Types 304 and 304L stainless steels, but it has no detectable effect on the resistance of Alloy 825 to SCC. Furthermore, while microbiologically induced corrosion effects have been observed for 300-series stainless steels, nickel-based alloys such as Alloy 825 seem to be immune to such problems. Of the copper-based alloys, CDA 715 has the best overall resistance to localized attack. Its resistance to pitting is comparable to that of CDA 613 and superior to that of CDA 102. Observed rates of dealloying in CDA 715 are less than those observed in CDA 613 by orders of magnitude. The resistance of CDA 715 to SCC in tarnishing ammonical environments is comparable to that of CDA 102 and superior to that of CDA 613. Its resistance to SCC in nontarnishing ammonical environments is comparable to that of CDA 613 and superior to that of CDA 102.

Stress Corrosion Cracking of Candidate Waste Container Materials

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ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.:/5 (359 download)

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Book Synopsis Stress Corrosion Cracking of Candidate Waste Container Materials by :

Download or read book Stress Corrosion Cracking of Candidate Waste Container Materials written by and published by . This book was released on 1992 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Stress Corrosion Cracking of Candidate Materials for Nuclear Waste Containers

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ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Stress Corrosion Cracking of Candidate Materials for Nuclear Waste Containers by :

Download or read book Stress Corrosion Cracking of Candidate Materials for Nuclear Waste Containers written by and published by . This book was released on 1989 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Types 304L and 316L stainless steel (SS), Incoloy 825, Cu, Cu-30%Ni, and Cu-7%Al have been selected as candidate materials for the containment of high-level nuclear waste at the proposed Yucca Mountain Site in Nevada. The susceptibility of these materials to stress corrosion cracking has been investigated by slow-strain-rate tests (SSRTs) in water which simulates that from well J-13 (J-13 water) and is representative of the groundwater present at the Yucca Mountain site. The SSRTs were performed on specimens exposed to simulated J-13 water at 93°C and at a strain rate 10−7 s−1 under crevice conditions and at a strain rate of 10−8 s−1 under both crevice and noncrevice conditions. All the tests were interrupted after nominal elongation strains of 1--4%. Examination by scanning electron microscopy showed some crack initiation in virtually all specimens. Optical microscopy of metallographically prepared transverse sections of Type 304L SS suggests that the crack depths are small (

Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers

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ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers by :

Download or read book Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers written by and published by . This book was released on 1988 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three iron- to nickel-based austenitic alloys (Types 304L and 316L stainless steels and Alloy 825) are being considered as candidate materials for the fabrication of high-level radioactive-waste containers. Waste will include fuel assemblies from reactors as well as high-level waste in borosilicate glass forms, and will be sent to the prospective repository at Yucca Mountain, Nevada. The decay of radionuclides in the repository will result in the generation of substantial heat and in fluences of gamma radiation. Container materials may undergo any of several modes of degradation in this environment, including atmospheric oxidation; uniform aqueous phase corrosion; pitting; crevice corrosion; sensitization and intergranular stress corrosion cracking (IGSCC); and transgranular stress corrosion cracking (TGSCC). This report is an analysis of data relevant to the pitting, crevice corrosion, and stress corrosion cracking (SCC) of the three austenitic candidate alloys. The candidates are compared in terms of their susceptibilities to these forms of corrosion. Although all three candidates have demonstrated pitting and crevice corrosion in chloride-containing environments, Alloy 825 has the greatest resistance to these types of localized corrosion (LC); such resistance is important because pits can penetrate the metal and serve as crack initiation sites. Both Types 304L and 316L stainless steels are susceptible to SCC in acidic chloride media. In contrast, SCC has not been documented in Alloy 825 under comparable conditions. Gamma radiation has been found to enhance SCC in Types 304 and 304L stainless steels, but it has no detectable effect on the resistance of Alloy 825 to SCC. Furthermore, while the effects of microbiologically induced corrosion have been observed for 300-series stainless steels, nickel-based alloys such as Alloy 825 seem to be immune to such problems. 211 refs., 49 figs., 10 tabs.

Stress-corrosion-cracking Studies on Candidate Container Alloys for the Tuff Repository

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ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis Stress-corrosion-cracking Studies on Candidate Container Alloys for the Tuff Repository by :

Download or read book Stress-corrosion-cracking Studies on Candidate Container Alloys for the Tuff Repository written by and published by . This book was released on 1992 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cortest Columbus Technologies, Inc. (CC Technologies) investigated the long-term performance of container materials used for high-level waste package as part of the information needed by the Nuclear Regulatory Commission (NRC) to assess the Department of Energy's application to construct to geologic repository for high-level radioactive waste. At the direction of the NRC, the program focused on the Tuff Repository. This report summarizes the results of Stress-Corrosion-Cracking (SCC) studies performed in Tasks 3, 5, and 7 of the program. Two test techniques were used; U-bend exposures and Slow-Strain-Rate (SSR) tests. The testing was performed on two copper-base alloys (Alloy CDA 102 and Alloy CDA 175) and two Fe-Cr-Ni alloys (Alloy 304L and Alloy 825) in simulated J-13 groundwater and other simulated solutions for the Tuff Repository. These solutions were designed to simulate the effects of concentration and irradiation on the groundwater composition. All SCC testing on the Fe-Cr-Ni Alloys was performed on solution-annealed specimens and thus issues such as the effect of sensitization on SCC were not addressed.

Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers ; Overview

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ISBN 13 :
Total Pages : 37 pages
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Book Synopsis Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers ; Overview by :

Download or read book Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers ; Overview written by and published by . This book was released on 1988 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three iron- to nickel-based austenitic alloys and three copper-based alloys are being considered as candidate materials for the fabrication of high-level radioactive-waste disposal containers. The austenitic alloys are Types 304L and 316L stainless steels and the high-nickel material Alloy 825. The copper-based alloys are CDA 102 (oxygen-free copper), CDA 613 (Cu-7Al), and CDA 715 (Cu-30Ni). Waste in the forms of both spent fuel assemblies from reactors and borosilicate glass will be sent to the prospective repository at Yucca Mountain, Nevada. The decay of radionuclides will result in the generation of substantial heat and gamma radiation. Container materials may undergo any of several modes of degradation in this environment, including undesirable phase transformations due to a lack of phase stability; atmospheric oxidation; general aqueous corrosion; pitting; crevice corrosion; intergranular stress corrosion cracking; and transgranular stress corrosion cracking. Problems specific to welds, such as hot cracking, may also occur. A survey of the literature has been prepared as part of the process of selecting, from among the candidates, a material that is adequate for repository conditions. The modes of degradation are discussed in detail in the survey to determine which apply to the candidate alloys and the extent to which they may actually occur. The eight volumes of the survey are summarized in Sections 1 through 8 of this overview. The conclusions drawn from the survey are also given in this overview.

Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers. Final Report

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Book Synopsis Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers. Final Report by :

Download or read book Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers. Final Report written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most significant factors impacting the performance of waste package container materials under repository relevant conditions is the thermal environment. This environment will be affected by the areal power density of the repository, which is dictated by facility design, and the dominant heat transfer mechanism at the site. The near-field environment will evolve as radioactive decay decreases the thermal output of each waste package. Recent calculations (Buscheck and Nitao, 1994) have addressed the importance of thermal loading conditions on waste package performance at the Yucca Mountain site. If a relatively low repository thermal loading design is employed, the temperature and relative humidity near the waste package may significantly affect the degradation of corrosion allowance barriers due to moist air oxidation and radiolytically enhanced corrosion. The purpose this report is to present a literature review of the potential degradation modes for moderately corrosion resistant nickel copper and nickel based candidate materials that may be applicable as alternate barriers for the ACD systems in the Yucca Mountain environment. This report presents a review of the corrosion of nickel-copper alloys, summaries of experimental evaluations of oxidation and atmospheric corrosion in nickel-copper alloys, views of experimental studies of aqueous corrosion in nickel copper alloys, a brief review of galvanic corrosion effects and a summary of stress corrosion cracking in these alloys.

Application of Accelerated Corrosion Tests to Service Life Prediction of Materials

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Publisher : ASTM International
ISBN 13 : 0803118538
Total Pages : 404 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Application of Accelerated Corrosion Tests to Service Life Prediction of Materials by : Gustavo Cragnolino

Download or read book Application of Accelerated Corrosion Tests to Service Life Prediction of Materials written by Gustavo Cragnolino and published by ASTM International. This book was released on 1994 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison of how different industries are addressing the development and selection of materials to use for such purposes as nuclear and other hazardous waste disposal and transport, structures designed to last a long time, and systems subject to economic pressures that keep them from frequent mai

Stress Corrosion Cracking Tests on High-level-waste Container Materials in Simulated Tuff Repository Environments

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ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (155 download)

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Book Synopsis Stress Corrosion Cracking Tests on High-level-waste Container Materials in Simulated Tuff Repository Environments by : T. Abraham

Download or read book Stress Corrosion Cracking Tests on High-level-waste Container Materials in Simulated Tuff Repository Environments written by T. Abraham and published by . This book was released on 1986 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Types 304L, 316L, and 321 austenitic stainless steel and Incoloy 825 are being considered as candidate container materials for emplacing high-level waste in a tuff repository. The stress corrosion cracking susceptibility of these materials under simulated tuff repository conditions was evaluated by using the notched C-ring method. The tests were conducted in boiling synthetic groundwater as well as in the steam/air phase above the boiling solutions. All specimens were in contact with crushed Topopah Spring tuff. The investigation showed that microcracks are frequently observed after testing as a result of stress corrosion cracking or intergranular attack. Results showing changes in water chemistry during test are also presented.

Stress Corrosion Cracking Tests Using Double-cantilever-beam Specimens

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ISBN 13 :
Total Pages : pages
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Book Synopsis Stress Corrosion Cracking Tests Using Double-cantilever-beam Specimens by :

Download or read book Stress Corrosion Cracking Tests Using Double-cantilever-beam Specimens written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although a wide variety of degradation modes can occur in aqueous environments for corrosion-resistant metallic materials, localized corrosion such as pitting corrosion, crevice corrosion, SCC, and hydrogen embrinlement (HE) is considered to be the primary mode. The evaluation of the susceptibility of candidate corrosion-resistant container materials to pitting and crevice corrosion is well underway using electrochemical polarization techniques described in the Activity Plan E-20-43144. The proposed activity (E-20-56) is aimed at evaluating the SCC behavior of these materials in susceptible environments using the linearelastic-fracture-mechanics (LEFM) concept. The mechanical driving force for crack growth, or the stress distribution at the crack tip is quantified by the stress intensity factor, K, for the specific crack and loading geometry. The critical stress intensity factor for SCC, KISCC for candidate materials will be evaluated in environments of interest, and their comparisons will be made to select the waste package inner container material having an optimum SCC resistance.

Energy Research Abstracts

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ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-11 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers

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Total Pages : pages
Book Rating : 4.:/5 (88 download)

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Book Synopsis Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers by :

Download or read book Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: