Diffusion in nanocrystalline metals and alloys -: A status report

被引：108
|
作者：
Würschum, R
Herth, S
Brossmann, U
机构：
[1] Graz Univ Technol, Inst Tech Phys, A-8010 Graz, Austria
[2] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
来源：
ADVANCED ENGINEERING MATERIALS | 2003年 / 5卷 / 05期
关键词：
D O I：
10.1002/adem.200310079
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Diffusion is a key property determining the suitability of nanocrystalline materials for use in numerous applications, and it is crucial to the assessment of the extent to which the interfaces in nanocrystalline samples differ from conventional grain boundaries. The present article offers an overview of diffusion in nanocrystalline metals and alloys. Emphasis is placed on the interfacial characteristics that affect diffusion in nanocrystalline materials, such as structural relation, grain growth, porosity, and the specific type of interface. In addition, the influence of intergranular amorphous phases and intergranular melting on diffusion is addressed, and the atomistic simulation of GB structures and diffusion is briefly summarized. On the basis of the available diffusion data, the diffusion-mediated processes of deformation and induced magnetic anisotropy are discussed.
引用
收藏
页码：365 / 372
页数：8
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