Local structure of mechanically alloyed nanocrystalline BCC Fe80Cu20 solid solution

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	Local structure of mechanically alloyed nanocrystalline BCC Fe80Cu20 solid solution
	Y. Z. Yang; Y. L. Zhu; Q. S. Li; X. M. Ma; Y. D. Dong; G. M. Wang; S. Q. Wei; F. X. Liu; Y. Z. Chuang
	1997
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	233 期号:2-3 页码:119-124
摘要	The fine structure of mechanically alloyed BCC Fe80Cu20 solid solution has been studied by X-ray diffraction (XRD), Mossbauer spectroscopy and the extended X-ray absorption fine structure (EXAFS) technique. The appearance of Mossbauer spectrum with a broad hyperfine magnetic field distribution demonstrates that the alloying is at an atomic level and complex forms of coordination exist in the solution. EXAFS results further prove the atomic alloying from the clear observation of Cu atoms taking on BCC coordination in the solution. Furthermore, a reduction in the nearest-neighbor coordination number of a center Cu atom but not for a center Fe atom due to surface effect and structure defects indicates the composition nonuniformity that Cu atoms are rich at interface and Fe atoms are slightly rich in the core of a BCC nanocrystal.
部门归属	shanghai univ,dept mat sci & engn,shanghai 200072,peoples r china. univ sci & technol china,ctr struct anal,hefei 230026,peoples r china. acad sinica,inst met res,shenyang 110015,peoples r china.;yang, yz (reprint author), guangdong univ technol,dept mat sci & engn,guangzhou 510090,peoples r china
关键词	Mechanical Alloying Nanocrystalline Solid Solutions Fine Structure Exafs Fe-cu System Thermal-stability Decomposition Iron
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38169
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Z. Yang,Y. L. Zhu,Q. S. Li,et al. Local structure of mechanically alloyed nanocrystalline BCC Fe80Cu20 solid solution[J]. Physica B-Condensed Matter,1997,233(2-3):119-124.
APA	Y. Z. Yang.,Y. L. Zhu.,Q. S. Li.,X. M. Ma.,Y. D. Dong.,...&Y. Z. Chuang.(1997).Local structure of mechanically alloyed nanocrystalline BCC Fe80Cu20 solid solution.Physica B-Condensed Matter,233(2-3),119-124.
MLA	Y. Z. Yang,et al."Local structure of mechanically alloyed nanocrystalline BCC Fe80Cu20 solid solution".Physica B-Condensed Matter 233.2-3(1997):119-124.