Local structure of mechanically alloyed nanocrystalline BCC Fe80Cu20 solid solution

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	Physica B-Condensed Matter
	1997
卷号	233 期号:2-3 页码:119-124
关键词	mechanical alloying nanocrystalline solid solutions fine structure EXAFS fe-cu system thermal-stability decomposition iron
ISSN号	0921-4526
中文摘要	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.
原文出处	://WOS:A1997XG33100004
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/38169]
专题	金属研究所_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.