Non-hydrostatic Conditions in High-pressure Devices : Analysis of Plastic Deformation with EDX

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The effect of different pressure devices and pressure media on the compression behavior of elastically anisotropic polycrystals (Cu<SUB>3</SUB>Au, Ni<SUB>3</SUB>Al) is investigated with energy-dispersive X-ray diffraction (EDX) correlating information from both line profiles and line positions. Plastic deformation due to stacking faults leads to a volume incompressibility preceded at high ratios of non-hydrostatic to hydrostatic stresses by a volume increase due to introduction of dislocations. A discontinuity in the compressibility at the transition back from plastic to elastic compression is due to the yield strength of the plastically deformed material and corresponds to the Hugoniot elastic limit. The compression of a fully plastically deformed material is elastic and isotropic, independent of the presence and type of pressure medium. The yield strength of the samples is estimated from the offset to the hydrostat of the compression curve above the discontinuity in the compressibility.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 1511-1513, 1998

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002694522
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4494283
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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