Face-centered-cubic to hexagonal-close-packed transformation in nanocrystalline Ni(Si) by mechanical alloying

被引:16
作者
Datta, MK [1 ]
Pabi, SK [1 ]
Murty, BS [1 ]
机构
[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
关键词
D O I
10.1557/JMR.2000.0206
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An allotropic transition from face-centered-cubic (fcc) to hexagonal-close-packed (hcp) Ni(Si) solid solution in Ni95Si5 and Ni90Si10 during nanocrystallization by mechanical alloying is reported. The transformation was identified as a defect-induced melting accompanied by a volume expansion of 8.6% and was observed when fee Ni(Si) reached a critical crystallite size of 10 nm. Calculation based on equation of state showed that a 37% reduction in tetragonal shear modulus and a negative pressure of about 8.7 GPa were generated at the onset of transformation.
引用
收藏
页码:1429 / 1432
页数:4
相关论文
共 20 条
  • [1] BLAADEREN A, 1997, NATURE, V385, P321
  • [2] CULITY BD, 1978, ELEMENTS XRAY DIFFRA, P411
  • [3] USE OF THE VOIGT FUNCTION IN A SINGLE-LINE METHOD FOR THE ANALYSIS OF X-RAY-DIFFRACTION LINE BROADENING
    DEKEIJSER, TH
    LANGFORD, JI
    MITTEMEIJER, EJ
    VOGELS, ABP
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1982, 15 (JUN) : 308 - 314
  • [4] Nanostructure formation by mechanical attrition
    Fecht, HJ
    [J]. NANOSTRUCTURED MATERIALS, 1995, 6 (1-4): : 33 - 42
  • [5] INTRINSIC INSTABILITY AND ENTROPY STABILIZATION OF GRAIN-BOUNDARIES
    FECHT, HJ
    [J]. PHYSICAL REVIEW LETTERS, 1990, 65 (05) : 610 - 613
  • [6] GRAYZNOV VG, 1993, PROG MATER SCI, V37, P289
  • [7] THE CRYSTAL TO GLASS TRANSFORMATION IN RELATION TO MELTING
    JOHNSON, WL
    LI, M
    KRILL, CE
    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1993, 156 : 481 - 492
  • [8] PREPARATION OF AMORPHOUS NI60NB40 BY MECHANICAL ALLOYING
    KOCH, CC
    CAVIN, OB
    MCKAMEY, CG
    SCARBROUGH, JO
    [J]. APPLIED PHYSICS LETTERS, 1983, 43 (11) : 1017 - 1019
  • [9] ELASTIC INSTABILITY OF CRYSTALS CAUSED BY STATIC ATOM DISPLACEMENT - A MECHANISM FOR SOLID-STATE AMORPHIZATION
    KOIKE, J
    [J]. PHYSICAL REVIEW B, 1993, 47 (13): : 7700 - 7704
  • [10] THE LATTICE EXPANSION IN NANOMETER-SIZED NI POLYCRYSTALS
    LIU, XD
    ZHANG, HY
    LU, K
    HU, ZQ
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (34) : L497 - L502