Mössbauer effect study of mechanically alloyed γ and Γ1 Fe-Zn intermediate phases

被引：1
|
作者：
Liu Z. [1 ]
Uwakweh O.N.C. [1 ]
机构：
[1] the Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, 45221-0012, OH
来源：
Metallurgical and Materials Transactions A | 1997年 / 28卷 / 3期
关键词：
Isomer Shift; Large Quadrupole Splitting; Local Charged State; Material Transaction; Quadruple Splitting;
D O I：
10.1007/s11661-997-0060-3
中图分类号：
学科分类号：
摘要：
The Mössbauer effect measurements of as-ball-milled mechanically alloyed Fe-Zn intermediate phases of Γ (Fe3Zn10) and Γ1 (Fe5Zn21) compositions exhibit characteristic spectra consisting of triplets. Each is characterized with an Fe site with unusually large quadrupole splittings measuring 0.940 mm/s in the cubic Fe-Zn phases and, in addition, three other doublets. In the aged state, both compositions show spectra free of the Fe site with quadrupole splitting of 0.940 mm/s, designated as MSΓFe1 and MSΓ1Fe1, respectively. This suggests that the metastable states are similar, while their separate transformation paths to stable equilibrium lead to distinct crystal structures. The parameters for the aged states are compared with those reported in the literature for both phases. © 1997, ASM International & TMS-The Minerals, Metals and Materials Society.
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页码：743 / 747
页数：4
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