Segregation inhibited grain coarsening in nanocrystalline alloys

被引：40
作者：
Beke, DL [1 ]
Cserháti, C [1 ]
Szabó, IA [1 ]
机构：
[1] Univ Debrecen, Dept Solid State Phys, H-4010 Debrecen, Hungary
来源：
JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 09期
关键词：
D O I：
10.1063/1.1688461
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It will be shown, in the framework of a general statistical (atomistic) treatment, that segregation inhibited grain coarsening in binary nanocrystalline alloys can be described by analytical expressions, if the effect can be attained with highly saturated grain boundaries. Relatively simple relations describing the temperature dependence of the stabilized grain-boundary fraction will be derived. The validity conditions of the relation proposed very recently by R. Kirchheim [Acta Mater. 50, 413 (2002)] are also analyzed. Our conclusions are compared with experimental results and the reliability of the few experimental data, known at present, will be discussed as well. (C) 2004 American Institute of Physics.
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页码：4996 / 5001
页数：6
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