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.
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页码:910 / 912
页数:3
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