... chemistry (NWC) environments. The main purpose of this research was to provide data to support the revision of EPRI BWR SCC disposition models during chemical transients. 316L stainless steel alloy 182 weld metal stress corrosion cracking crack growth rate direct current potential drop water chemistry...

... power plant. The as-received Alloy 600 showed crack growth rates (CGRs) between 9.6 x 10^-9 mm/s and 3.8 × 10^-8 mm/s, and the as-welded Alloy 182 had CGRs between 7.9 × 10^-8 mm/s and 7.5 × 10^-7 mm/s within the range of the applied loadings. These results...

... inch (3.175 mm) in diameter. The gage section of the specimen was polished to a 600-grit finish or finer immediately prior to testing. Crack Growth Rate Method Abstract Stress corrosion cracking (SCC) is a documented threat to the integrity of the radioactive waste storage tanks at Hanford...

... the PWSCC resistances of Alloy 182 and Alloy 152 welds by measuring the crack growth rate (CGR) using a compact tension (CT) specimen in a simulated primary water condition. Surface oxidation tests are also conducted under identical experimental conditions to obtain clues with which to understand...

... environment and in seawater under cathodic protection (CP) to understand the difference in the CGR. The applicability of a crack tip strain rate based model in rationalizing the CGR vs K. Offshore pipelines fatigue crack growth rate crack growth rate fatigue fracture subcritical crack growth crack tip...

... and the associated strain rate at the crack tip. A summary of the effect of the K-rate on the steady CGR is shown in Figure 5 . The steady state CGR is strongly dependent on the K-rate exhibiting a power law relationship with an exponent of 0.72. Abstract Crack growth rate (CGR) behavior of UNS N07718...

...Abstract The effects on stress corrosion crack growth rates of Alloy X-750 of heat, microstructure, heat treatment, crack plane orientation, stress intensity factor, corrosion potential and water purity have been extensively investigated in 288 °C water. A crack growth rate database of Alloy X-750...

... the irradiation assisted stress corrosion cracking (IASCC) mechanism and for establishing strategies for IASCC mitigation. In this study, experimental crack growth rate (CGR) data of irradiated alloys reported by the university and the Cooperative IASCC Research (CIR) program were correlated with hardness...

...Nuclear materials ferritic steels stress corrosion cracking crack growth rate high temperature water INTRODUCTION Austenitic stainless steels such as types 304 and 316 are highly susceptible to stress corrosion cracking in chloride containing environments, especially at temperatures higher...

... 8 mm round compact tension type, which were irradiated in the BOR-60 fast reactor. At the University of Michigan, crack growth rate (CGR) tests were conducted under constant K conditions in normal water chemistry, hydrogen water chemistry, and primary water chemistry at 288°C and 320°C. The fracture...

... on the steel surface and local break down of the scale lead to localized anodic dissolution and crack propagation. stress corrosion cracking carbonate-bicarbonate CO₂ corrosion tubular steels downhole environments crack growth rate crack evolution INTRODUCTION The search for new oil and gas...

... crack growth rate INTRODUCTION Rapid fracture of structural material, which can also be called sudden fracture, has been observed as very rapid crack advance on compact tension (CT) specimen during SCC test in high temperature water. A growing number of laboratory observations show this phenomenon...

...Abstract This paper describes the facilities for conducting crack growth rate (CGR) tests on neutron-irradiated alloys in LWR environments. A set of procedures were developed for using the facilities to test CGRs of neutron-irradiated stainless steel in the Irradiated Materials Testing Complex...

...Abstract To better understand the irradiation assisted stress corrosion cracking (IASCC) mechanism and to establish strategies for IASCC mitigation, it is essential to acquire accurate crack growth data on neutron-irradiated alloys in the relevant environment. In this study, a crack growth rate...

... propagation stalled or it was below the detection limit, a value of CGR = 1 x 10⁻¹¹ mm/s was entered. Table 5 Crack Growth Rate (mm/s) in 550° F (288°C) Water + 30 ppb SO ²⁻4 + 2 ppm O₂ Test Conditions c503, 5%Cr c532, 9%Cr c533, 13%Cr c493, 17%Cr K=25 ksi...

... ¹⁰ are similar in form and yield close values. For this work, the Hall equation is used. By neglecting the time derivative term of K, the Hall equation becomes Abstract Crack growth rate (CGR) is a critical parameter in pipeline integrity management for estimating the time needed for the next...

...Stress corrosion cracking (SCC) in pipelines occurs under two broad pH conditions – alkaline pH and near-neutral pH. ¹ SCC can lead to leaks, sudden bursts, or explosions of gas and liquid pipelines. ^{1 - 2} Crack growth rate (CGR) is a key parameter to be considered when...

... of this research program. PWHT threshold stress stress intensity factor crack growth rate ethanol SCC synthetic fuel grade ethanol plastic strain INTRODUCTION During the development of the API 939E ¹ guidelines bulletin, an important piece of information that was not available was data from...

... in representative pressurized water reactor primary water at 290 to 360 °C. Intergranular cracking was observed on Alloy 690 at constant stress intensity factor (no cycling) and with “gentle” cyclic loading, but not in every case. Crack growth rates in some tests were in the range of 1 to 10 x 10^–9 mm/s...

... findings of this program. slow-strain-rate stress intensity factor crack growth rate ethanol SCC INTRODUCTION During the past two years, a substantial testing effort on stress corrosion cracking (SCC) of steel in fuel ethanol has been undertaken by various organizations. Consequently, there has been...