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Author : Susan McFarland
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (74 download)
Download or read book Acoustic Emission Monitoring of Delayed Hydride Cracking in Zirconium 2.5% Niobium written by Susan McFarland and published by . This book was released on 1995 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Initiation of Delayed Hydride Cracking in Zirconium-2.5 Niobium written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Douglas Keith Rodgers
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Initiation of Delayed Hydride Cracking in Zirconium-2.5 Niobium written by Douglas Keith Rodgers and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delayed Hydride Cracking (DHC) occurs in Zr-2.5Nb when certain requirements are met. The mechanism of DHC consists of diffusion of hydrogen to a stress concentrator, such as a crack-tip, precipitation then fracture of a hydride at the crack-tip, and repetition of the process; the crack advances in steps. Incubation times, to the start of cracking and crack-tip hydride morphologies have been measured in pre-cracked cantilever beam specimens tested at applied K$\rm\sb I$'s up to 20 MPam$\sp{1/2}$ and temperatures ranging from 100 to 250$\sp\circ$C. The incubation time for DHC was found to vary inversely with DHC velocity. Contrary to previous research, the incubation time is highly variable, even for a given temperature and applied K$\rm\sb I,$ and the crack-tip hydride morphology is much more complicated than the simple model of a single hydride at a crack-tip.
Author : Ahmed Fathi Shalabi
Publisher :
ISBN 13 :
Total Pages : 490 pages
Book Rating : 4.:/5 (27 download)
Download or read book Initiation of Delayed Hydride Cracking in Zirconium-2.5 Wt.% Niobium Pressure Tubes written by Ahmed Fathi Shalabi and published by . This book was released on 1989 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Manfred P. Puls
Publisher : Springer Science & Business Media
ISBN 13 : 1447141954
Total Pages : 475 pages
Book Rating : 4.4/5 (471 download)
Download or read book The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components written by Manfred P. Puls and published by Springer Science & Business Media. This book was released on 2012-08-04 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: By drawing together the current theoretical and experimental understanding of the phenomena of delayed hydride cracking (DHC) in zirconium alloys, The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components: Delayed Hydride Cracking provides a detailed explanation focusing on the properties of hydrogen and hydrides in these alloys. Whilst the emphasis lies on zirconium alloys, the combination of both the empirical and mechanistic approaches creates a solid understanding that can also be applied to other hydride forming metals. This up-to-date reference focuses on documented research surrounding DHC, including current methodologies for design and assessment of the results of periodic in-service inspections of pressure tubes in nuclear reactors. Emphasis is placed on showing how our understanding of DHC is supported by progress in general understanding of such broad fields as the study of hysteresis associated with first order phase transformations, phase relationships in coherent crystalline metallic solids, the physics of point and line defects, diffusion of substitutional and interstitial atoms in crystalline solids, and continuum fracture and solid mechanics. Furthermore, an account of current methodologies is given illustrating how such understanding of hydrogen, hydrides and DHC in zirconium alloys underpins these methodologies for assessments of real life cases in the Canadian nuclear industry. The all-encompassing approach makes The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Component: Delayed Hydride Cracking an ideal reference source for students, researchers and industry professionals alike.
Author :
Publisher :
ISBN 13 :
Total Pages : 1142 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. L. Eadie
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Effect of stress on hydride precipitation in zirconium-2.5 percent niobium and on delayed hydride cracking written by R. L. Eadie and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George P. Sabol
Publisher : ASTM International
ISBN 13 : 0803124996
Total Pages : 953 pages
Book Rating : 4.8/5 (31 download)
Download or read book Zirconium in the Nuclear Industry written by George P. Sabol and published by ASTM International. This book was released on 2000 with total page 953 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Atomic Energy Agency
Publisher : IAEA
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.3/5 (91 download)
Download or read book Delayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors written by International Atomic Energy Agency and published by IAEA. This book was released on 2004 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dated October 2004. With CD-ROM containing additional information inside back cover
Author : Douglas Keith Rodgers
Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.:/5 (872 download)
Download or read book Initiation of Delayed Hydride Cracking in Zr-2.5Nb written by Douglas Keith Rodgers and published by . This book was released on 1992 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delayed Hydride Cracking (DHC) occurs in Zr-2.5Nb when certain requirements are met. The mechanism of DHC consists of diffusion of hydrogen to a stress concentrator, such as a crack-tip, precipitation then fracture of a hydride at the crack-tip, and repetition of the process; the crack advances in steps. Incubation times, to the start of cracking and crack-tip hydride morphologies have been measured in pre-cracked cantilever beam specimens tested at applied K$\rm\sb I$'s up to 20 MPam$\sp{1/2}$ and temperatures ranging from 100 to 250$\sp\circ$C. The incubation time for DHC was found to vary inversely with DHC velocity. Contrary to previous research, the incubation time is highly variable, even for a given temperature and applied K$\rm\sb I,$ and the crack-tip hydride morphology is much more complicated than the simple model of a single hydride at a crack-tip.
Author : Gang Lin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)
Download or read book The Arrest of Delayed Hydride Cracking in Zr-2.5%Nb Alloys at Elevated Temperatures written by Gang Lin and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gang Lin (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 582 pages
Book Rating : 4.:/5 (75 download)
Download or read book The Arrest of Delayed Hydride Cracking in ZR-2.5%NB Alloys at Elevated Temperatures written by Gang Lin (Ph. D.) and published by . This book was released on 1999 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Atomic Energy Agency
Publisher :
ISBN 13 :
Total Pages : 199 pages
Book Rating : 4.:/5 (12 download)
Download or read book Delayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors. IAEA TECDOC Series written by International Atomic Energy Agency and published by . This book was released on 2004 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes all of the research work undertaken as part of the IAEA coordinated research program on hydrogen and hydride induced degradation of the mechanical and physical properties of zirconium based alloys, and includes a review of the state of the art in understanding crack propagation by Delayed Hydride Cracking (DHC), and details of the experimental procedures that have produced the most consistent set of DHC rates reported in an international round-robin exercise to this date.
Author : Christopher E. Coleman
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (125 download)
Download or read book Measurement of Rates of Delayed Hydride Cracking (DHC) in Zr-2.5Nb Alloys--An IAEA Coordinated Research Project written by Christopher E. Coleman and published by . This book was released on 2008 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Values of DHC rates in Zr alloys are sensitive to measurement procedures. A standard method has been developed at the laboratories of AECL and evaluated in a round-robin involving ten IAEA member states. Two test materials were used--Zr-2.5Nb pressure tubes in the cold-worked (CANDUTM) and heat-treated (RBMK) conditions. Cracks were grown from fatigued starter cracks in the axial direction on the axial-radial plane of the original tubes. To obtain the maximum value of Vc, specimens were heated to dissolve all their hydrogen, then cooled at 1 to 3°C/min to the test temperature before loading at 15 MPa?m. Although the start of cracking was detected by potential drop, the extent of cracking was measured directly on the crack faces. The values of incubation time to the start of cracking were highly variable but Vc was well behaved. The values of Vc were normally distributed with a range varying from a factor of 1.2 to 5.2. At 250°C the mean value of Vc from 80 specimens of cold-worked material was 8.9(±1.12)x10-8 m/s and from 41 specimens of heat-treated material the mean value of Vc was3.3(±0.64)x10-8 m/s. Tests were also done at six other temperatures between 144 and 283°C, using up to 22 specimens at each temperature. Both materials had an Arrhenius-type temperature dependence, Vc=Aexp(-Q/RT). The use of strictly defined and coordinated experimental procedures gave a consistent set of Vc values, allowing effective comparison of results obtained in different national laboratories and resulting in good correlations between the DHC velocity values and differences in strength, crystallographic texture, and distribution of ?-phase in the test materials.
Author : S-Q. Shi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Advances in the theory of delayed hydride cracking in zirconium alloys written by S-Q. Shi and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard R. Smith
Publisher :
ISBN 13 :
Total Pages : 354 pages
Book Rating : 4.:/5 (73 download)
Download or read book Delayed Hydride Cracking of Zr-2.5%Nb written by Richard R. Smith and published by . This book was released on 1987 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Atomic Energy Agency
Publisher :
ISBN 13 : 9789201086105
Total Pages : 66 pages
Book Rating : 4.0/5 (861 download)
Download or read book Delayed Hydride Cracking of Zirconium Alloy Fuel Cladding written by International Atomic Energy Agency and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication examines the phenomena of delayed hydride cracking (DHC) in Zircaloy-4 claddings and presents the results of a coordinated research project on this subject. It discusses the circumstances and the mechanisms that lead to DHC in Zircaloy-4 cladding materials and documents the knowledge gained through an inter-laboratory comparison where the physical conditions for DHC have been studied. An advanced DHC testing methodology developed in Studsvik, Sweden, and consistent experimental data of international round-robin DHC velocity measurements in CANDU/PHWR and LWR cladding Zircaloy-4 materials are also attached.
