Elasticity of Tantalum to 105 Gpa using a stress and angle-resolved x-ray diffraction

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Determining the mechanical properties such as elastic constants of metals at Mbar pressures has been a difficult task in experiment. Following the development of anisotropic elastic theory by Singh et al. [l], Mao et a1.[2] have recently developed a novel experimental technique to determine the elastic constants of Fe by using the stress and energy-dispersive x-ray diffraction (SEX). In this paper, we present an improved complementary technique, stress and angle-resolved x-ray diffraction (SAX), which we have applied to determine the elastic constants of tantalum to 105 GPa. The extrapolation of the tantalum elastic data shows an excellent agreement with the ... continued below

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813 Kilobytes pages

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Cynn, H & Yoo, C S August 11, 1999.

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Determining the mechanical properties such as elastic constants of metals at Mbar pressures has been a difficult task in experiment. Following the development of anisotropic elastic theory by Singh et al. [l], Mao et a1.[2] have recently developed a novel experimental technique to determine the elastic constants of Fe by using the stress and energy-dispersive x-ray diffraction (SEX). In this paper, we present an improved complementary technique, stress and angle-resolved x-ray diffraction (SAX), which we have applied to determine the elastic constants of tantalum to 105 GPa. The extrapolation of the tantalum elastic data shows an excellent agreement with the low-pressure ultrasonic data [3]. We also discuss the improvement of this SAX method over the previous SEX. [elastic constant, anisotropic elastic theory, angle-dispersive synchrotron x-ray diffraction, mechanical properties]

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813 Kilobytes pages

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  • International Conference on High Pressure Science and Technology, Honolulu, HI (US), 07/25/1999--07/30/1999

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  • Report No.: UCRL-JC-135362
  • Report No.: YN0100000
  • Report No.: 98-ER-059
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 13792
  • Archival Resource Key: ark:/67531/metadc618516

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  • August 11, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 1:15 p.m.

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Cynn, H & Yoo, C S. Elasticity of Tantalum to 105 Gpa using a stress and angle-resolved x-ray diffraction, article, August 11, 1999; California. (digital.library.unt.edu/ark:/67531/metadc618516/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.