Author: E. C. W. PerrymanPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Delayed hydrogen cracking in zr-2.5 percent nb and zircaloy-2 pressure tubes
Author: E. C. W. PerrymanA further appraisal of delayed hydrogen cracking zr-2 1/2 percent nb and zircaloy-2 pressure tubes
Author: E. W. C. PerrymanAn appraisal of delayed hydrogen cracking in zr-2 1/2 percent nb pressure tubes
Author: E. C. W. PerrymanDelayed hydrogen cracking in the rolled joints of zircaloy -2 pressure tubes
Author: J. H. Van Der KuurEvaluation and prevention of delayed hydrogen cracking of ht zr-2.5 wt percent nb pressure tubes
Author: Susceptibility of Zirconium Alloys to Delayed Hydrogen Cracking
Author: JFR AmblerPublisher:
ISBN:
Category : Crack initiation
Languages : en
Pages : 19
Book Description
Smooth and notched cantilever beams and round-notched bars were machined from pressure tubes of cold-worked Zr-2.5Nb and Zircaloy-2. They were loaded in the temperature range 290 to 520 K. After two thermal cycles and at high stress, cracks were initiated in smooth beams of cold-worked Zr-2.5Nb. Under the same test conditions, cold-worked Zircaloy-2 plastically deformed with no cracking. When notches were present, cracks propagated at the same rate in both materials by delayed hydrogen cracking. In cold-worked Zr-2.5Nb, the crack velocity followed an Arrhenius plot with an apparent activation energy of 42 kJ/mol. Below 420 K, the threshold stress intensity factor for delayed hydrogen cracking was about 5 MPa m. Therefore, cracking can be prevented by keeping tensile stresses very low.
Comprehensive Structural Integrity
Author: Ian MilnePublisher: Elsevier
ISBN: 0080490735
Category : Business & Economics
Languages : en
Pages : 4647
Book Description
The aim of this major reference work is to provide a first point of entry to the literature for the researchers in any field relating to structural integrity in the form of a definitive research/reference tool which links the various sub-disciplines that comprise the whole of structural integrity. Special emphasis will be given to the interaction between mechanics and materials and structural integrity applications. Because of the interdisciplinary and applied nature of the work, it will be of interest to mechanical engineers and materials scientists from both academic and industrial backgrounds including bioengineering, interface engineering and nanotechnology. The scope of this work encompasses, but is not restricted to: fracture mechanics, fatigue, creep, materials, dynamics, environmental degradation, numerical methods, failure mechanisms and damage mechanics, interfacial fracture and nano-technology, structural analysis, surface behaviour and heart valves. The structures under consideration include: pressure vessels and piping, off-shore structures, gas installations and pipelines, chemical plants, aircraft, railways, bridges, plates and shells, electronic circuits, interfaces, nanotechnology, artificial organs, biomaterial prostheses, cast structures, mining... and more. Case studies will form an integral part of the work.
Delayed Hydrogen Cracking of Zirconium Alloy Pressure Tubes
Author: A. H. JackmanPublisher: Mississauga, Ont. : Atomic Energy of Canada Limited, Power Projects
ISBN:
Category : Pressure vessels
Languages : en
Pages : 24
Book Description
Effects of hydrogen supersaturation on delayed hydride cracking in zr-2.5 nb pressure tubes
Author: G. K. ShekDelayed Hydride Cracking in Zirconium Alloys in Pressure Tube Nuclear Reactors
Author: International Atomic Energy AgencyPublisher: IAEA
ISBN:
Category : Business & Economics
Languages : en
Pages : 102
Book Description
Dated October 2004. With CD-ROM containing additional information inside back cover