... with descriptions of testing protocols to evaluate these and other factors to help the user prememptively prevent and address aircraft corrosion issues. aircraft corrosion aluminum exfoliation stress-corrosion cracking coatings 385 Chapter 24 | Commercial Aircraft Edward L. Colvin1 Introduction...

... The nucleation of intergranular stress-corrosion cracking (IGSCC) in Type 304 stainless steel was investigated using atomic force microscopy (AFM). A new test technique with an AFM fluid cell and a miniature specimen bending device was used for the in-situ measurements. It was found that upon...

... The stress-corrosion cracking of mild steel (0.17% C) in phosphate media (0.1 - 2.0 M NaH 2 PO 4 at pH = 4 and 20 - 80 °C) is studied using slow strain rate and potential sweep techniques as well as SEM, X-ray diffraction and Mossbauer analysis of the surface films. It is shown...

... and shaft caps as well as nut fasteners in transgranular and intergranular stress corrosion cracking (SCC) modes, respectively. A valve stem, made of alloy C86500, has just recently been found to fail what appears to be from SCC, but in a combination of transgranular and intergranular modes. Tapping goose...

... This paper explores the initiation of stress-corrosion cracking (SCC) on the exterior of gas transmission piping. Initiation is taken here to include processes leading to the formation of a crack-like feature as well as early growth. Initiation is characterized in terms of the microstructural...

... The process of initiating the stress-corrosion crack growth comprises following six elementary processes; namely, ( I ) the incubation period, ( II ) the process of nucleating the corrosion pits (or corrosion crevices), ( III ) the process of the growth of pits (or crevices), ( IV ) the process...

... In order to study the effects of introducing an artificial crevice to the specimen on the stress-corrosion cracking (SCO test for stainless alloys in the boiling water reactor (BWR) primary coolant environments, uniaxial constant load tests were performed in a high-temperature, high-purity water...

... The breaking load test provides quantitative stress corrosion cracking data by determining the residual strength of tension specimens that have been exposed to corrosive environments. Eight laboratories have participated in a cooperative test program under the auspices of ASTM Committee G-1...

... Stress-corrosion cracking (SCC) has been found to be the cause of failure of 48-in. (1219.2-mm) and 30-in. (762-mm) diameter manganese bronze gate valve bodies, a 48-in.-diameter shaft cap, and 1½-in. (38-mm)-diameter nuts. All of these in-service failures occurred in New York City distribution...

... as major components. The slow strain rate tests were carried out at controlled electrochemical potentials both anodic and cathodic to the corrosion potential of -550 mV SCE (saturated calomel electrode). The tests demonstrated that the corrosion potential is at the edge of the stress-corrosion cracking...

... A technique has been developed that permits detection and characterization of sparsely distributed chemical inhomogeneities in Zircaloy. These inhomogeneities have previously been observed at the origins of iodine stress-corrosion cracks but are not detectable by, for example, simple scanning...

... The test techniques that have been used to assess the corrosion behavior of aluminum powder metallurgy (PM) alloys are described. Standard ASTM tests have been used to measure general and pitting corrosion, exfoliation corrosion, and stress-corrosion cracking (SCC) susceptibilities...

... Results of stress-corrosion cracking (SCC) studies of surgical implant materials that have employed a fracture mechanics type of specimen are presented. The behavior of Type 316L stainless steel and Ti-6AI-4V ELI in a number of different environments has been examined. Tests have been performed...

... A phenomenological model has been developed for predicting iodine-induced stress-corrosion crack (SCC) initiation and growth in Zircaloy cladding. This model is capable of predicting various observed behaviors related to SCC. A recently developed submodel for predicting the effect of texture...

... The stress-corrosion-cracking (SCC) susceptibility of Al 7075-T6 alloys has been studied in a controlled-atmosphere chamber utilizing the slow-strain-rate technique. The effects of high-humidity air with small additions of sulfur dioxide, nitrogen dioxide, and surface salts in different...

... are considered. corrosion fatigue stress-corrosion cracking fractography Al-Zn-Mg alloys 7000 series alloys seawater hydrogen embrittlement loading frequency N. J. Henry Holroyd^ and Donald Hardie^ Corrosion Fatigue of 7000 Series Aluminum Alloys REFERENCE; Holroyd, N. J. H. and Hardie, D...

.... The effects of varying degrees of out-of-plane cracking on apparent crack growth rates are noted. corrosion fatigue crack propagation stress-corrosion cracking titanium alloys microstructure fracture mechanics G. R. Yoder,' L. A. Cooky,' and T. W. Crooker^ Effects of Microstructure and Frequency...

... The stress-corrosion cracking (SCC) resistance of commercially fabricated mill-annealed and thermally treated Inconel Alloy 600 steam generator tubing was evaluated over a range of sodium hydroxide concentrations (10 to 50 percent), test temperatures [316 to 343 °C (600 to 650 °F)] and applied...

... embrittlement and stress-corrosion cracking, and (3) processability through heat treatment after hot forming, to avoid the necessity of cold forming of the ring. The principal alloy developed during the course of this work was an iron-based superalloy, designated EPRI-T, which has the nominal composition Fe...

... above the lower critical (Ac 1 ) temperature and then water quenching. Cast structures are comparable to wrought structures in SSC resistance. steels hydrogen embrittlement hydrogen sulfide environment stress-corrosion cracking casing material alloy steels molybdenum steels chromium...