Study of local environment of Cu atoms in Fe73.5Cu1Nb3Si13.5B9 alloy with different annealing temperature

被引：0
作者：
Yu Zhang
Ying Yang
YuXin Wang
Wei Lu
Biao Yan
机构：
[1] Tongji University,School of Materials Science and Engineering
[2] Shanghai Key Lab. of D&A for Metal-Functional Materials,Department of Chemical & Materials Engineering
[3] the University of Auckland,undefined
来源：
Science China Physics, Mechanics and Astronomy | 2013年 / 56卷
关键词：
extended X-ray absorption fine structure; Cu clusters; average coordination number; occupancy rate;
D O I：
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中图分类号：
学科分类号：
摘要：
The local environment of Cu atoms in Fe73.5Cu1Nb3Si13.5B9 alloy was investigated by extended X-ray absorption fine structure (EXAFS). Cu clusters began to order when the annealing temperature was around 733 K from the results of the Fourier transform curves. The fitting results showed that the first shell of the near fcc (face-centered cubic) Cu clusters only contained Cu atoms. The coordination number increased with the annealing temperature. Subsequently, the occupancy rate increased from 33.3% (annealed at 733 K) to 100% (annealed at 853 K). This local structural change of Cu atoms could probably affect the distribution of the bcc(body-centered cubic) α-Fe in Fe73.5Cu1Nb3Si13.5B9 alloy.
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页码：1887 / 1891
页数：4
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