... , Vol. 29 , No. 12 , December 1973 . 6 Raymond   E. L. , " Mechanisms of Sensitization and Stabilization of Incoloy Nickel-Iron-Chromium Alloy 825 ”. Corrosion – NACE , Vol. 24 , No. 6 , June 1968 . 7 ASTM G 28 (latest revision) , " Standard Test Methods for Detecting...

.... Alloy 825 and 625 showed negligible corrosion rates and scale formation. 316L showed a thin adherent scale, while carbon steel showed gross corrosion and scale formation. EDS data has been collected measuring the concentration of sulfur at the surface of each material after exposure. This data indicate...

... 825 are not sufficiently resistant to SCC, and examines the SCC resistance of this class of material when the Cr level is elevated to ~25% Cr. Stress corrosion cracking light water reactors structural materials welds water chemistry Cr effects Alloy 800 Alloy 825 Alloy 690 extended plant life...

... 4 : intergranular attack was not present. Abstract Alloy 825, is a nickel base corrosion & heat resistant alloy. This alloy with austenitic matrix has been stabilized with Ti to prevent over production of chromium carbides. However, heating it to the temperature range between 650-800°C, called...

...(1) Fe → Fe 2 + + 2 e − where: Abstract The effect of environmental parameters and area ratio on the galvanic protection of Alloy 825 by A516 steel was studied. A simplified model was used to calculate the potential and corrosion current density of the bimetallic couple...

...localized corrosion stress corrosion cracking repassivation potential corrosion potential pitting potential sensitization stainless steel nickel base alloy 316L alloy 825 INTRODUCTION The use and limitations of various corrosion and stress corrosion cracking (SCC) test techniques have...

... are discussed along with details on welding and nondestructive testing specifications. hydroprocessing hydrocracker hydrotreater effluent air cooler piping ammonium bisulfide corrosion carbon steel duplex stainless steel alloy 800 alloy 825 INTRODUCTION Pipe material costs in dollars per pound ($/lb...

... waste repository at Yucca Mountain. The effects of environmental variables, such as chloride concentration, the addition of thiosulfate, and temperature, on the stress corrosion cracking susceptibility of type 316L stainless steel and alloy 825 (Ni-29Fe-22Cr-3.0Mo-2.0Cu-l.0Ti) were studied...

...-containing groundwaters at elevated temperatures. Potentiostatic tests conducted on alloy 825, a candidate container material, have shown that the potential at which localized corrosion can be initiated is a function of surface conditions and time. The initiation potentials for localized corrosion measured...

...The objective of this investigation was to determine the effect of the chromium depleted mill finished surface of alloy 825 on the localized corrosion resistance of this proposed nuclear waste container material. Both potentiodynamic and potentiostatic tests were conducted on mill finished surfaces...

... in a greater decrease in pH. The changes in chloride concentration are much more modest, perhaps due to the formation of chloride complexes which can not be detected by the Ag/AgCl microelectrode. Presence of chromium depletion on the surface of alloy 825 in the crevice results in a more rapid decrease in pH...

...The test program focused on type 316L stainless steel and alloy 825 ( Table 1 ). Cylindrical specimens of these alloys (6.35 mm diameter x 48.5 mm long) were wet-ground to a 600-grit finish, rinsed in high-purity water, degreased with acetone, and dried before each test. The specimens were attached...

...Material Abstract Localized corrosion is one of the important considerations in the design of metallic containers used for the geologic disposal of high-level nuclear waste. This paper addresses the effect of environmental factors on the localized corrosion behavior of alloy 825, one...