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

来源：

JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 07期

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

页码：1429 / 1432

页数：4

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 [J].

DEKEIJSER, TH ;

LANGFORD, JI ;

MITTEMEIJER, EJ ;

VOGELS, ABP .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1982, 15 (JUN) :308-314

[4] Nanostructure formation by mechanical attrition [J].

Fecht, HJ .

NANOSTRUCTURED MATERIALS, 1995, 6 (1-4) :33-42

[5] INTRINSIC INSTABILITY AND ENTROPY STABILIZATION OF GRAIN-BOUNDARIES [J].

FECHT, HJ .

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 [J].

JOHNSON, WL ;

LI, M ;

KRILL, CE .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1993, 156 :481-492

[8] PREPARATION OF AMORPHOUS NI60NB40 BY MECHANICAL ALLOYING [J].

KOCH, CC ;

CAVIN, OB ;

MCKAMEY, CG ;

SCARBROUGH, JO .

APPLIED PHYSICS LETTERS, 1983, 43 (11) :1017-1019

[9] ELASTIC INSTABILITY OF CRYSTALS CAUSED BY STATIC ATOM DISPLACEMENT - A MECHANISM FOR SOLID-STATE AMORPHIZATION [J].

KOIKE, J .

PHYSICAL REVIEW B, 1993, 47 (13) :7700-7704

[10] THE LATTICE EXPANSION IN NANOMETER-SIZED NI POLYCRYSTALS [J].

LIU, XD ;

ZHANG, HY ;

LU, K ;

HU, ZQ .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (34) :L497-L502

← 1 2 →