... of the specimen after the test. (4) Intergranular (IG) cracking of alloy 600 (UNS N06600) can be observed not only under simulated primary water but also under high purity hydrogen gas. Both IG crackings have almost the same activation energy. (5) According to rapid straining electrode tests under simulated...

... of alloy 600(UNS N06600) are observed under the condition without DH, however repassivation could not be observed and only cathodic current is observed under the condition with DH. These cathodic current observed under the condition with DH, reaches some plateau value in a few seconds and the currents...

...Abstract Hump-SSRT tests of alloy 600(UNS N06600) have been carried out under simulated primary water and dry high purity hydrogen gas at the temperature ranging from 360 to 320°C. Inter Granular (IG) cracking is observed not only under simulated primary water but also under high purity hydrogen...

... affected by temperature and may degrade at high temperatures. In this paper, corrosion monitoring using coated aluminum and nickel-based Alloy 600 electrodes at temperatures above 100 °C is presented. A diamond-like carbon thin film was deposited on the sensing electrodes. The effectiveness of the diamond...

...Alloy 600 Alloy 22 is also a highly corrosion-resistant nickel-based material and may be used for nuclear waste disposal containers. ⁵ Yang, et al. ⁶ measured the general corrosion rate of Alloy 22 in triple-salt brines consisting of NaCl, NaNO₃...

... (and the associated pH at temperature). EXPERIMENTAL PROCEDURES Alloy 600 (UNS 06600) was used in the as-received conditions ( Table 1 ). It was obtained as control rod drive mechanism (CRDM) housing and was known to be quite susceptible to SCC condition. The Alloy 182 weld metal (UNS 86182) used in these studies...

... 9.21 60.0 28.9 Ti:0.56 619 43 * Alloy 132(UNS W86132) and 82(UNS N06082) are filler metals for alloy 600(UNS N06600). ** Alloy 152(UNS W86152) and 52(UNS N06052) are filler metals for alloy 690(UNS N06690). Abstract It is known that Ni based alloy suffered SCC in primary water of PWR...

...Abstract PWSCC in Alloy 600 and Alloy 182, 132 and 82 weld metals is important because these materials are widely used in the PWR coolant system. Plant experience indicates that PWSCC will steadily increase as plants age without effective mitigation. This study is investigating the mitigation...

... of the Alloy 600 type material in the heat affected zone (HAZ). Testing has shown that the SCC growth rate in Alloy 600 heat affected zone specimens can be ~ 30x faster than observed in the Alloy 600 base material under identical testing conditions due to fewer intergranular chromium rich carbides...

...Alloy 600 weld metal stress corrosion cracking primary water SCC PWSCC titanium niobium SSRT activation energy constant-load test INTRODUCTION It is widely known that mill-annealed, nickel-base Alloy 600 is susceptible to stress corrosion cracking in primary cooling water of pressurized...

... solution compared to the sulfate solutions. On these alloys, M₃O₄ formed in low dissolved oxygen solutions while a M₂O₃ film formed in high dissolved oxygen, similar to what has been observed in high purity water. Alloy 600 in the PWR experiments was polarized...

... will be provided of some of these test results, and their application to operating plant issues. Flow-Impingement Mass Transfer Flow-Accelerated Corrosion Pipes Steam Generator High-Temperature Aqueous Solutions Carbon Steels Alloy 600 Electrochemical Corrosion Potential Hydrogen Peroxide Lithium...

... for either the Alloy 600MA or Alloy 600TT tubes. Steam generator stress corrosion cracking Alloy 600 heat transfer crevices secondary side inclusions stringers INTRODUCTION Alloy 600MA Freespan ODSCC Steam generators in the pressurized water reactor (PWR) power plants contain thousands of long thin...

... the approximated curve of Alloy 600 base metal. As shown in these figures, the higher the temperature, the higher the crack growth rate. From the temperature dependency of crack growth rate, the apparent activation energy for PWSCC was calculated. ⁶ The apparent activation energies for PWSCC on Alloy...

...TABLE 2 ROOM TEMPERATURE MECHANICAL PROPERTIES OF ALLOY 600 AND 690 HEATS AFTER THE FINAL HEAT TREATMENT Material Final heat treatment 0,2% YS(MPa) UTS (MPa) A% alloy 600 720°C/15 h 394 668 38,4 alloy 690 715°C/10 h 297 659 48,8 The microstructure of these heats has...

...Abstract The intergranular stress corrosion cracking (IGSCC) of alloy 600 (UNS N06600) in high temperature water depends upon the microstructure and particularly upon the grain boundary composition and the intergranular carbide distribution. However, has been found that the presence of dissolved...

... and alloy 600 / 182. In addition to simple properties like Cr concentration, ductility, and yield strength (alloy 182 weld metal is somewhat different), there are similarities in tendency to sensitize (although Ni alloys do “heal” more readily), in the solubility vs. temperature and pH of Fe and Ni oxides...

...Abstract The influence of dissolved hydrogen and temperature on primary stress corrosion cracking (PWSCC) of alloy 600 was studied at temperature ranging from 310 to 360 °C and hydrogen contents ranging from 0 to 4 ppm using slow strain rate tensile technique (SSRT) and constant load tensile test...

... internals and SCC in Alloy 600/182 reactor vessel head penetrations in PWRs. environmentally assisted cracking stress corrosion cracking stainless steel Alloy 600 BWR PWR INTRODUCTION Degradation of materials by environmentally assisted cracking (EAC) can have a substantial adverse impact on the safe...

...Abstract In the present study alloys 600 and 690 were tested in simulated PWR primary water, at 360°C, under electrochemical conditions corresponding to Ni/NiO equilibrium potential which corresponds to the maximum sensitivity of alloy 600 to crack initiation. The potential was adjusted through...