Depression of melting point of multidomained bismuth in aluminum based metallic glass nanocomposites

被引:35
作者
Goswami, R
Chattopadhyay, K
机构
[1] Center for Advanced Studies, Department of Metallurgy, Indian Institute of Science
关键词
D O I
10.1063/1.116940
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report the synthesis of nanocomposites of Bi in an aluminum based metallic glass matrix by rapid solidification. It is shown that constrained melting and solidification of nanometer sized embedded Bi particles lead to the formation of symmetry related multidomained particles. The Bi particles exhibit a significantly large depression of bulk melting point (over 100 K) requiring a free energy gain of greater than 0.7 x 10(8) J m(-3). This cannot be explained by the size dependence of melting points or other pressure effects and represents an intrinsic characteristic of the multidomained particles. (C) 1996 American Institute of Physics.
引用
收藏
页码:910 / 912
页数:3
相关论文
共 16 条
[1]   SIZE EFFECT ON MELTING TEMPERATURE OF GOLD PARTICLES [J].
BUFFAT, P ;
BOREL, JP .
PHYSICAL REVIEW A, 1976, 13 (06) :2287-2298
[2]  
CAHN JW, 1983, SOLID SOLID PHASE TR, P3
[3]  
ELLIS WP, 1950, J APPL PHYS, V21, P804
[4]   DEFECT-INDUCED MELTING AND SOLID-STATE AMORPHIZATION [J].
FECHT, HJ .
NATURE, 1992, 356 (6365) :133-135
[5]   THE SUPERHEATING OF PB EMBEDDED IN A ZN MATRIX - THE ROLE OF INTERFACE MELTING [J].
GOSWAMI, R ;
CHATTOPADHYAY, K .
PHILOSOPHICAL MAGAZINE LETTERS, 1993, 68 (04) :215-223
[6]   MICROSTRUCTURAL EVOLUTION AND TRANSFORMATION PATHWAYS IN THE NEAR MONOTECTIC ZN RICH ZN-BI ALLOYS DURING RAPID SOLIDIFICATION [J].
GOSWAMI, R ;
CHATTOPADHYAY, K .
ACTA METALLURGICA ET MATERIALIA, 1994, 42 (02) :383-393
[7]  
HOFMAN CJ, 1975, J PHYS CHEM SOLIDS, V36, P1249
[8]   STABILITY OF MULTIPLY-TWINNED PARTICLES [J].
INO, S .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1969, 27 (04) :941-&
[9]   DUCTILE ALUMINUM-BASE AMORPHOUS-ALLOYS WITH 2 SEPARATE PHASES [J].
INOUE, A ;
YAMAMOTO, M ;
KIMURA, HM ;
MASUMOTO, T .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1987, 6 (02) :194-196
[10]  
Massalski TB., 1982, BINARY ALLOY PHASE D