Thermal expansion behavior of δ-zirconium hydrides: Comparison of δ hydride powder and platelets

Cinbiz, Mahmut N.; Hu, Xunxiang; Terrani, Kurt A.

doi:10.1016/j.jnucmat.2018.07.026

Title: Thermal expansion behavior of δ-zirconium hydrides: Comparison of δ hydride powder and platelets

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Abstract

The thermal expansion coefficient of δ hydrides and the evolution of the d-spacing of δ hydride platelets in Zircaloy-4 during heat treatments were investigated by conducting synchrotron x-ray diffraction experiments. Identical experiments enabled a direct comparison of the d-spacing of δ zirconium hydride platelets with the d-spacing of the powder δ hydrides. By analyzing the experimental data of this study and the data available in the literature, the thermal expansion coefficient of pure δ hydrides was determined as 14.1 10^-6 °C^-1. Finally, a direct comparison of the d-spacings of δ hydride platelets in CWSR Zry-4 sheet and the powder δ hydride samples showed an evolution of temperature-dependent strains within the δ hydride precipitates in which the strain components normal to the platelet edges exceed that normal to the platelet face during cooling/precipitation but not during heating/dissolution above approx. 200 °C.

Authors:

^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Tue Jul 24 00:00:00 EDT 2018

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1462875

Alternate Identifier(s):: OSTI ID: 1691646

Grant/Contract Number:: AC05-00OR22725; 17-13708

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Nuclear Materials

Additional Journal Information:: Journal Volume: 509; Journal Issue: C; Journal ID: ISSN 0022-3115

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Zirconium hydrides; Thermal expansion coefficient; Lattice parameter; δ hydrides; Synchrotron radiation; Mechanical strain; Dissolution and precipitation

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                    Cinbiz, Mahmut N., Hu, Xunxiang, and Terrani, Kurt A. Thermal expansion behavior of δ-zirconium hydrides: Comparison of δ hydride powder and platelets.  United States: N. p., 2018. 
Web.  doi:10.1016/j.jnucmat.2018.07.026.

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                    Cinbiz, Mahmut N., Hu, Xunxiang, & Terrani, Kurt A. Thermal expansion behavior of δ-zirconium hydrides: Comparison of δ hydride powder and platelets.  United States.  https://doi.org/10.1016/j.jnucmat.2018.07.026

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                    Cinbiz, Mahmut N., Hu, Xunxiang, and Terrani, Kurt A. Tue .  
"Thermal expansion behavior of δ-zirconium hydrides: Comparison of δ hydride powder and platelets".  United States.  https://doi.org/10.1016/j.jnucmat.2018.07.026.  https://www.osti.gov/servlets/purl/1462875.

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@article{osti_1462875,

  title        = {Thermal expansion behavior of δ-zirconium hydrides: Comparison of δ hydride powder and platelets},

  author       = {Cinbiz, Mahmut N. and Hu, Xunxiang and Terrani, Kurt A.},

  abstractNote = {The thermal expansion coefficient of δ hydrides and the evolution of the d-spacing of δ hydride platelets in Zircaloy-4 during heat treatments were investigated by conducting synchrotron x-ray diffraction experiments. Identical experiments enabled a direct comparison of the d-spacing of δ zirconium hydride platelets with the d-spacing of the powder δ hydrides. By analyzing the experimental data of this study and the data available in the literature, the thermal expansion coefficient of pure δ hydrides was determined as 14.1 10-6 °C-1. Finally, a direct comparison of the d-spacings of δ hydride platelets in CWSR Zry-4 sheet and the powder δ hydride samples showed an evolution of temperature-dependent strains within the δ hydride precipitates in which the strain components normal to the platelet edges exceed that normal to the platelet face during cooling/precipitation but not during heating/dissolution above approx. 200 °C.},

  doi          = {10.1016/j.jnucmat.2018.07.026},

  journal      = {Journal of Nuclear Materials},

  number       = C,

  volume       = 509,

  place        = {United States},

  year         = {Tue Jul 24 00:00:00 EDT 2018},

  month        = {Tue Jul 24 00:00:00 EDT 2018}

}

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