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Deformation Mechanisms Texture And Anisotropy In Zirconium And Zircaloy
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Book Synopsis Deformation Mechanisms, Texture, and Anisotropy in Zirconium and Zircaloy by : Erich Tenckhoff
Download or read book Deformation Mechanisms, Texture, and Anisotropy in Zirconium and Zircaloy written by Erich Tenckhoff and published by ASTM International. This book was released on 1988 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deformation mechanisms, texture, and anisotropy in zirconium and zircaloy by : Erick Tenckhoff
Download or read book Deformation mechanisms, texture, and anisotropy in zirconium and zircaloy written by Erick Tenckhoff and published by . This book was released on 1988 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Review of Deformation Mechanisms, Texture, and Mechanical Anisotropy in Zirconium and Zirconium Base Alloys by : E. Tenckhoff
Download or read book Review of Deformation Mechanisms, Texture, and Mechanical Anisotropy in Zirconium and Zirconium Base Alloys written by E. Tenckhoff and published by . This book was released on 2005 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deformation systems in hexagonal close-packed (hcp) metals are not as symmetrically distributed as in cubic ones. Furthermore, because the primary slip systems are not as numerous and are limited to deformations in the a direction, twinning competes with slip in plastic deformation and can, depending on the deformation conditions, play an essential role. In order to explain the conditions in Zirconium and Zircaloy, the well-established relationships of hcp metals are discussed and so are their dependencies on the metal-specific parameters of the hexagonal structure. The interactions between deformation mechanisms and texture formation on the one side and deformation mechanisms and mechanical anisotropy on the other can be likewise transferred to other hcp metals, if one takes into account the differences in dependence of the metal-specific parameters.
Book Synopsis Deformation Mechanisms, Texture, and Anisotropy in Zirconium and Zircaloy by : Erich Tenckhoff
Download or read book Deformation Mechanisms, Texture, and Anisotropy in Zirconium and Zircaloy written by Erich Tenckhoff and published by . This book was released on 1988 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Anisotropy, Strain Aging and Deformation Mechanisms in Zirconium and Zirconium-niobium Alloys by : Khalid M. Al-Otaibi
Download or read book Mechanical Anisotropy, Strain Aging and Deformation Mechanisms in Zirconium and Zirconium-niobium Alloys written by Khalid M. Al-Otaibi and published by . This book was released on 1990 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creep of Zirconium Alloys in Nuclear Reactors by :
Download or read book Creep of Zirconium Alloys in Nuclear Reactors written by and published by ASTM International. This book was released on with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-Reactor Deformation of Zirconium Alloy Components by : R. A. Holt
Download or read book In-Reactor Deformation of Zirconium Alloy Components written by R. A. Holt and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper briefly reviews work by the author identifying and describing in-reactor deformation mechanisms of materials and structures used in nuclear reactors, in particular, Zircaloy-2, Zircaloy-4, and Zr-2.5Nb, and the CANDU fuel channel (comprising Zr alloy pressure tubes, calandria tubes, and spacers). The discussion is set in the context of contemporary findings of other workers in the international community. The following themes are highlighted: The contributions of creep and growth to deformation; c-component dislocations and the fluence dependence of irradiation growth; anisotropy of irradiation growth; deformation equations and pressure tube-to-calandria tube contact in CANDU reactors; low temperature flux (damage rate) dependence of deformation rates. The first developments were reported in 1976 at the third conference in this series and there are ongoing developments in all areas. The linear low temperature flux dependence of creep and growth rates is yet to be satisfactorily explained.
Book Synopsis Intergranular and Interphase Constraints in Zirconium Alloys by : F. Xu
Download or read book Intergranular and Interphase Constraints in Zirconium Alloys written by F. Xu and published by . This book was released on 2008 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the development of intergranular and interphase constraints in textured Zircaloy-2, Zr-2.5Nb, and Excel alloy during room temperature tension and compression loading in two or three directions relative to the parent texture. Neutron diffraction was used to track the lattice strain development in the ?-phase (all alloys) and ?-phase (Zr-2.5Nb and Excel) in three principal directions relative to the parent texture. Zircaloy-2 at room temperature is essentially single phase hcp ?Zr. The active deformation mechanisms appear to be, in order of increasing critical resolved shear stress, prism (a) slip, basal (a) slip, tensile twinning and pyramidal (c+a) slip. No compressive twinning was observed. Combined with intergranular constraints due to prior thermal treatment, these mechanisms result in substantial asymmetry in the yield stress and lattice strain development (compression versus tension). In Zr-2.5 Nb and Excel, the ?-phase appears to deform by the same slip mechanisms as Zircaloy-2, and similar assymmetry of the yield stress and lattice strain development is observed. However, the existence of tensile twinning is not clearly evidenced. The ?-phase also deforms by slip, but the critical resolved shear stress is much higher than that for the slip mechanisms in the ?-phase, leading to the development of very large interphase constraints in the plastic deformation regime. This is attributed to a combination of solution strengthening of the ?-phase (by Nb and, in Excel, Mo) and by grain size.
Book Synopsis Applications-Related Phenomena in Zirconium and Its Alloys by : Committee B-10 Staff
Download or read book Applications-Related Phenomena in Zirconium and Its Alloys written by Committee B-10 Staff and published by ASTM International. This book was released on 1969 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Variation in the Strain Anisotropy of Zircaloy with Temperature and Strain by : E. D. Hindle
Download or read book Variation in the Strain Anisotropy of Zircaloy with Temperature and Strain written by E. D. Hindle and published by . This book was released on 1984 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zirconium in the Nuclear Industry by : Craig M. Eucken
Download or read book Zirconium in the Nuclear Industry written by Craig M. Eucken and published by ASTM International. This book was released on 1991 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the Ninth International Symposium on [title], held in Kobe, Japan, November 1990, address current trends in the development, performance, and fabrication of zirconium alloys for nuclear power reactors. the bulk of the most recent work on zirconium alloy behavior has concerned corr
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creep of Zirconium Alloys in Nuclear Reactors by : D. G. Franklin
Download or read book Creep of Zirconium Alloys in Nuclear Reactors written by D. G. Franklin and published by ASTM International. This book was released on 1983 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zirconium in Nuclear Applications by : J. H. Schemel
Download or read book Zirconium in Nuclear Applications written by J. H. Schemel and published by ASTM International. This book was released on 1974 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zirconium in Nuclear Applications by : Schemel JH.
Download or read book Zirconium in Nuclear Applications written by Schemel JH. and published by ASTM International. This book was released on 1974 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1982 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lattice Strain and Texture Evolution During Room-temperature Deformation in Zircaloy-2 by : Feng Xu
Download or read book Lattice Strain and Texture Evolution During Room-temperature Deformation in Zircaloy-2 written by Feng Xu and published by . This book was released on 2007 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zircaloy-2 and its sister alloy, Zircaloy-4, have extensive applications in the nuclear industry as core components in heavy water reactors and fuel cladding in both heavy and light water reactors. Intergranular stresses and texture can greatly affect the mechanical performance of these components. A complete understanding of the development of intergranular constraints and texture in Zircaloy-2 will allow an improved understanding of the plastic deformation of zirconium alloys, and the prediction of in-reactor deformation of tubes made by different manufacturing routes. Neutron diffraction was used to track the development of lattice strain and peak intensity in three dimensions for various crystallographic planes in samples cut from a rolled Zircaloy-2 slab. The samples were subject to room temperature compression or tension in-situ in the neutron spectrometer in each of the three principal directions of the slab. Textures in the deformed samples were measured using neutron diffraction. Strong evidence was found for tensile twinning in tensile tests in the plate normal direction and compression tests in the transverse and rolling directions. The lattice strain development inside the newly formed twins was recorded for the first time in a Zr alloy. An elasto-plastic self-consistent model and a visco-plastic self-consistent model were used to interpret the lattice strain and texture data, respectively. Various slip and twinning modes were considered in both models. Prism a slip, basal a slip, pyramidal c+a slip and tensile twinning were concluded to be indispensable, while pyramidal a slip was unnecessary in the modeling. The critical resolved shear stresses and hardening parameters were obtained by simultaneously achieving a 'best-fit' with the complete experimental data set. The effects of anisotropic latent hardening due to dislocation interactions were found to be critical, and the inclusion of Lankford coefficients as modeling constraints was necessary. This research provided a comprehensive experimental data set obtained by neutron diffraction, forming a sound basis to investigate active plastic deformation mechanisms and to rigorously test plasticity models and twinning models. The research also made a substantial improvement in understanding the plastic deformation of Zircaloy-2 through polycrystalline modeling by introducing extensive data sets to constrain the modeling parameters.
