Download or read book Stress corrosion cracking of zirconium alloys in iodine vapour written by J. C. Wood and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors affecting stress corrosion cracking of zircaloy in iodine vapour written by J. C. Wood and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Investigation on the Initiation of Iodine induced Stress Corrosion Cracking in Zirconium Alloys written by Petit Wiringgalih and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Aspects of Iodine Induced Stress Corrosion Cracking of Zircaloys written by D. Cubicciotti and published by . This book was released on 1982 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thermodynamics of the zirconium-iodine system are summarized. In the gas phase are four stable species: ZrI4, ZrI3, ZrI2, and ZrI. Their enthalpies of formation and free-energy functions are presented. The only one of those species relevant to stress corrosion cracking (SCC) of zirconium alloys by iodine is the tetraiodide. There are also four solid compounds corresponding approximately in composition to the tetra, tri, di, and monoiodides. Ranges of solid solution composition, enthalpies of formation, and free-energy functions for those phases are given. Thermodynamic information for iodine chemisorbed on zirconium surfaces is also presented. These thermochemical results are used to analyze chemical behavior in situations related to SCC. In particular, reaction of cesium iodide with uranium dioxide in a fuel rod may produce an iodine pressure large enough to result in chemisorbtion of iodine on clean zirconium.

Download or read book Correlation of Failure Times for Iodine SCC of Zircaloy written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A crack-growth model of stress corrosion cracking has been successfully applied to predict times-to-failure of zircaloy specimens exposed to iodine vapor. Data for two types of tests were analyzed using the model. The first was a variable loading experiment in which failure occurred after the specimen had been subjected to two distinct stresses in succession. The second was a series of tests in which surface roughness, and probably residual stress as well, was reduced by chemical polishing of the specimens. The success of the crack growth model in dealing with these situations suggests that crack propagation rather than crack initiation is the rate-controlling step in iodine stress corrosion cracking of zircaloy. Furthermore, the metal in the vicinity of the growing crack is apparently so embrittled by iodine that a model originally intended for ceramics applies.

Download or read book Stress Corrosion Cracking of Zircaloy in the Prescence of Iodine written by David Bruce Knorr and published by . This book was released on 1981 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress Corrosion Cracking of Zircaloys in Iodine Containing Environments written by B. Cox and published by . This book was released on 1974 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iodine solutions in organic solvents fall into two groups. First, those which, like iodine vapor at room temperature, cause crack propagation in double cantilever beam (DCB) specimens but do not initiate cracks in smooth specimens. These are solvents which form no, or only weak complexes with iodine. A second group of solvents (alcohols) both initiate cracking in smooth specimens and cause crack propagation in DCB specimens. These are solvents which form strong complexes with iodine. In addition to these two groups there are a few solvents in which neither crack propagation in DCB specimens nor cracking of smooth specimens occur.

Download or read book Iodine stress corrosion cracking of as received Zircaloy 4 at 700 degrees C and 800 degrees C written by D. Lim and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The influence of hydrogen content and graphite coatings on the iodine stress corrosion cracking susceptibility of zirconium alloys written by J. A. Chitty and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The individual influence of hydrogen content and graphite coating on the iodine stress corrosion cracking susceptibility of zirconium alloys has been investigated using the stressed c-ring and fuel swelling simulation testing techniques. such parameters as hydrogen content, iodine concentration, type of graphite coating, alloy composition and condition of tubing have been examined. fracture topography has been characterized both by optical microscopy and scanning electron microscopy. models have been proposed to account for the resistance to iodine stress corrosion cracking provided by both hydrogen and to a lesser extent, graphite coatings.

Download or read book Iodine induced stress corrosion cracking of Zircaloy fuel cladding materials written by and published by . This book was released on 2000 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Grain by Grain Study of the Mechanisms of Crack Propagation During Iodine Stress Corrosion Cracking of Zircaloy 4 written by AO. Dorado and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the tests conducted to determine the conditions leading to cracking of a specified grain of metal, during the iodine stress corrosion cracking (SCC) of zirconium alloys, focusing on the crystallographic orientation of crack paths, the critical stress conditions, and the significance of the fractographic features encountered. In order to perform crystalline orientation of fracture surfaces, a specially heat-treated Zircaloy-4 having very large grains, grown up to the wall thickness, was used. Careful orientation work has proved that intracrystalline pseudo-cleavage occurs only along basal planes. The effects of anisotropy, plasticity, triaxiality, and residual stresses originated in thermal contraction have to be considered to account for the influence of the stress state. A grain-by-grain calculation led to the conclusion that transgranular cracking always takes place on those bearing the maximum resolved tensile stress perpendicular to basal planes. Propagation along twin boundaries has been identified among the different fracture modes encountered.

Download or read book Iodine stress Corrosion Cracking of Zircaloy 2 Cladding Under Near Plane Strain and Localized Stress strain Conditions written by Bernardo do Nascimento Nobrega and published by . This book was released on 1984 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress corrosion cracking of zircaloy in iodine a probable failure mechanism in water reactor fuel pins written by A. Garlick and published by . This book was released on 1969 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Studies of Crack Initiation During Stress Corrosion Cracking of Zirconium Alloys written by B. Cox and published by . This book was released on 1987 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to study crack initiation, we had first to develop a technique for reproducibly obtaining large numbers of very small crack initiation regions. The previously used test methods of stressed split-rings or pressurized (or compressed) tubes gave low success rates. Specimens either showed through-wall cracks, or no cracks, with few incipient cracks being observed. This suggested that the propagation time was short compared with the incubation time. Attempts to overcome this by unloading specimens following the first acoustic emission signal still gave a low frequency of incipient cracks.

Download or read book On the stress corrosion cracking of zircaloy fuel sheathing in iodine at 573 k written by C. P. Ashdown and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Zirconium in the Nuclear Industry written by and published by ASTM International. This book was released on with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Stress Corrosion Cracking Resistance of Ultrafinegrained Zirconium Alloys written by Nogués Martín, Pere and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method (approach) have been developed for SCC tests of sheet specimens from zirconium alloys which includes: exposure in iodine-methanol solution, quantitative analysis of corrosion defects, tensile tests of corroded specimens and quantitative analysis of fracture surfaces and cross sections. A comparison was made between sheets of as-received and ultrafinegrained zirconium alloys for nuclear reactors to discuss its applicability in the nuclear industry.