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Impact of Small Chemistry Variations in Plate and Weld Filler Metal on the Corrosion Performance of Ni-Cr-Mo Alloys

Description: The ASTM standard B 575 provides the requirements for the chemical composition of Nickel-Chromium-Molybdenum (Ni-Cr-Mo) alloys such as Alloy 22 (N06022) and Alloy 686 (N06686). The compositions of each element are given in a range. For example, the content of Mo is specified from 12.5 to 14.5 weight percent for Alloy 22 and from 15.0 to 17.0 weight percent for Alloy 686. It was important to determine how the corrosion rate of welded plates of Alloy 22 using Alloy 686 weld filler metal would cha… more
Date: February 5, 2006
Creator: Fix, D V & Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Long-Term Corrosion Behavior of Alloy 22 in 5 M CaCl2 at 120?C

Description: In conditions where tight crevices exist in hot chloride containing solutions Alloy 22 may suffer crevice corrosion. The occurrence (or not) of crevice corrosion in a given environment (e.g. salt concentration and temperature), is governed by the values of the critical potential (E{sub crit}) for crevice corrosion and the corrosion potential (E{sub corr}). This paper discusses the evolution of E{sub corr} and corrosion rate (CR) of creviced Alloy 22 specimens in 5 M calcium chloride (CaCl{sub 2… more
Date: February 5, 2006
Creator: Estill, J. C.; Hust, G. A.; Evans, K. J.; Stuart, M. L. & Rebak, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sample Proficiency Test exercise

Description: The current format of the OPCW proficiency tests has multiple sets of 2 samples sent to an analysis laboratory. In each sample set, one is identified as a sample, the other as a blank. This method of conducting proficiency tests differs from how an OPCW designated laboratory would receive authentic samples (a set of three containers, each not identified, consisting of the authentic sample, a control sample, and a blank sample). This exercise was designed to test the reporting if the proficiency… more
Date: February 5, 2006
Creator: Alcaraz, A.; Gregg, H. & Koester, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Chemistry Variations in Plate and Weld Filler Metal on the Corrosion Performance of Ni-Cr-Mo Alloys

Description: The ASTM standard B 575 provides the requirements for the chemical composition of Nickel-Chromium-Molybdenum (Ni-Cr-Mo) alloys such as Alloy 22 (N06022) and Alloy 686 (N06686). The compositions of each element are given in a range. For example, the content of Mo is specified from 12.5 to 14.5 weight percent for Alloy 22 and from 15.0 to 17.0 weight percent for Alloy 686. It was important to determine how the corrosion rate of welded plates of Alloy 22 using Alloy 686 weld filler metal would cha… more
Date: February 5, 2006
Creator: Fix, D V & Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electrochemical Testing of Gas Tungsten Arc Welded and Reduced Pressure Electron Beam Welded Alloy 22

Description: Alloy 22 (N06022) is the material selected for the fabrication of the outer shell of the nuclear waste containers for the Yucca Mountain high-level nuclear waste repository site. A key technical issue in the waste package program has been the integrity of the container weld joints. The currently selected welding process for fabricating and sealing the containers is the traditional gas tungsten arc welding (GTAW) or TIG method. An appealing faster alternative technique is reduced pressure electr… more
Date: February 5, 2006
Creator: Day, S. D.; Wong, F. G.; Gordon, S. R.; Wong, L. L. & Rebak, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Methods of Calculation of Resistance to Polarization (Corrosion Rate) Using ASTM G 59

Description: The corrosion rate of a metal (alloy) can be measured using: (1) Immersion tests or weight loss such as in ASTM G 1 and G 31 or (2) Electrochemical techniques such as in ASTM G 59. In the polarization resistance (PR) or linear polarization method (G 59), the resistance to polarization (Rp) of a metal is measured in the electrolyte of interest in the vicinity of the corrosion potential (E{sub corr}). This polarization resistance can be mathematically converted into corrosion rates (CR). A plot o… more
Date: February 5, 2006
Creator: Wong, L L; King, K J; Martin, S I & Rebak, R B
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparative Corrosion Behavior of Two Palladium Containing Titanium Alloys

Description: The ASTM standard B 265 provides the requirements for the chemical composition of titanium (Ti) alloys. It is planned to use corrosion resistant and high strength titanium alloys to fabricate the drip shield at the proposed Yucca Mountain Repository. Titanium grade (Gr) 7 (R52400) and other Ti alloys are currently being characterized for this application. Ti Gr 7 contains 0.15% Palladium (Pd) to increase its corrosion performance. In this article we report results on the comparative short term … more
Date: February 5, 2006
Creator: Lian, T; Yashiki, T; Nakayama, T; Nakanishi, T & Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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