Intergrannular strain evolution in a zircaloy-4 alloy with Widmanstatten microstructure

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A Zircaloy-4 alloy with Widmanstatten-Basketweave microstructure and random texture has been used to study the deformation systems responsible for the polycrystalline plasticity at the grain level. The evolution of internal strain and bulk texture is investigated using neutron diffraction and an elasto-plastic self-consistent (EPSC) modeling scheme. The macroscopic stress-strain behavior and intergranular (hkil-specific) strain development, parallel and perpendicular to the loading direction, were measured in-situ during uniaxial tensile loading. Then, the EPSC model was employed to simulate the experimental results. This modeling scheme accounts for the thermal anisotropy; elastic-plastic properties of the constituent grains; and activation, reorientation, and stress relaxation ... continued below

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Clausen, Bjorn; Vogel, Sven C; Garlea, Eena; Choo, Hahn; Pang, Judy W L & Kenik, Edward A January 1, 2009.

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A Zircaloy-4 alloy with Widmanstatten-Basketweave microstructure and random texture has been used to study the deformation systems responsible for the polycrystalline plasticity at the grain level. The evolution of internal strain and bulk texture is investigated using neutron diffraction and an elasto-plastic self-consistent (EPSC) modeling scheme. The macroscopic stress-strain behavior and intergranular (hkil-specific) strain development, parallel and perpendicular to the loading direction, were measured in-situ during uniaxial tensile loading. Then, the EPSC model was employed to simulate the experimental results. This modeling scheme accounts for the thermal anisotropy; elastic-plastic properties of the constituent grains; and activation, reorientation, and stress relaxation associated with twinning. The agreement between the experiment and the model will be discussed as well as the critical resolved shear stresses (CRSS) and the hardening coefficients obtained from the model.

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  • Proceedings of TMS 2009 in Metall. Trans. A ; February 15, 2009 ; San Francisco, CA

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  • Report No.: LA-UR-09-01217
  • Report No.: LA-UR-09-1217
  • Grant Number: AC52-06NA25396
  • Office of Scientific & Technical Information Report Number: 956567
  • Archival Resource Key: ark:/67531/metadc928464

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  • January 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 6:40 p.m.

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Clausen, Bjorn; Vogel, Sven C; Garlea, Eena; Choo, Hahn; Pang, Judy W L & Kenik, Edward A. Intergrannular strain evolution in a zircaloy-4 alloy with Widmanstatten microstructure, article, January 1, 2009; [New Mexico]. (digital.library.unt.edu/ark:/67531/metadc928464/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.