Mechanical Anisotropy and Formability of Textured Zircaloy Sheet PDF Download
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Author: Susan Agneta Lloyd
Publisher:
ISBN:
Category : Anisotropy
Languages : en
Pages : 140
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Book Description
Author: Susan Agneta Lloyd
Publisher:
ISBN:
Category : Anisotropy
Languages : en
Pages : 140
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Book Description
Author: Erich Tenckhoff
Publisher: ASTM International
ISBN: 080310958X
Category : Anisotropy
Languages : en
Pages : 85
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Book Description
Author: Leo F. P. Van Swam
Publisher: ASTM International
ISBN: 0803111991
Category : Nuclear fuel claddings
Languages : en
Pages : 781
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Book Description
Author: Craig M. Eucken
Publisher: ASTM International
ISBN: 080311463X
Category : Nuclear fuel claddings
Languages : en
Pages : 794
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Book Description
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
Author: E. Tenckhoff
Publisher:
ISBN:
Category : Mechanical anisotropy
Languages : en
Pages : 26
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Book Description
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.
Author: Yuzhu Wang
Publisher:
ISBN:
Category : Zirconium alloys
Languages : en
Pages : 282
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Book Description
Author: ST. Mahmood
Publisher:
ISBN:
Category : Anisotropy
Languages : en
Pages : 21
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Book Description
The mechanical anisotropy of recrystallized Zircaloy-4 sheet, characterized in terms of anisotropy parameters R and P obtained from contractile strain ratios measured using grid analysis method, showed no strain dependence of these parameters. This linear variation of contractile strains in Zircaloys has been observed by other investigators as well, which misleadingly points to no effect of deformation on crystallographic textures and resulting mechanical anisotropy. Since the deformation caused by slip and twinning reorients the crystallites producing changes in texture even at low strains, the purpose of this study was to investigate the texture rotations caused by tensile deformation along the rolling (RD) and transverse (TD) directions of recrystallized Zircaloy-4 sheet. Tensile deformation along the RD of the sheet showed little effect on the initial bimodal basal texture in the ND-TD plane, which became smoother and unimodal after high (~20%) tensile strain along the RD. Tensile strain along the TD, on the other hand, exhibited strong texture rotations which resulted in 90 deg rotation of the basal pole distribution making it almost bimodal in the ND-RD plane at high (~34%) strains, after going through a unimodal (ideal) distribution at intermediate (~15%) strains. The observed strain independence of anisotropy is explained through combined effects of texture rotations and changes in the macroscopic stress state.
Author: J. S. Kallend
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 1160
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Author: Sheikh Tahir Mahmood
Publisher:
ISBN:
Category :
Languages : en
Pages : 616
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Book Description
Author: KL. Murty
Publisher:
ISBN:
Category : Anisotropy
Languages : en
Pages : 26
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Book Description
This paper summarizes our recent work on thin sheets, thick-walled TREXs, and thin-walled tubings of Zircaloy materials with emphasis on texture analyses, orientation distribution functions, plasticity models, correlation of single crystal behavior to textured bulk materials as well as their application to in-reactor performance of cladding materials in LWRs. The mechanical anisotropy and strain localization were investigated on recrystallized Zircaloy-4 sheet using the grid method, which yielded the transverse contractile strain ratios (R,P), formability parameter B, critical strains to necking, and fracture. The anisotropy and formability parameters were also evaluated from texture data and crystallite orientation distribution function (CODF) using prism slip as the dominant deformation mode, and both the lower bound and Bishop-Hill analyses were considered. Excellent correlations were noted between the experimental results and lower bound model predictions.
