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Philosophical Magazine A Volume 75, 1997 - Issue 2
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Original Articles

A structural model of the orthorhombic C31-Al60Mn11Ni4 approximant

H. X. Sui Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, PO Box 2724, 100080, Beijing, PR China; Department of Materials Engineering, Dalian University of Technology, Dalian, 116024, PR China
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K. Sun Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, PO Box 2724, 100080, Beijing, PR China; Department of Materials Engineering, Dalian University of Technology, Dalian, 116024, PR China
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K. H. Kuo Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, PO Box 2724, 100080, Beijing, PR China; Department of Materials Engineering, Dalian University of Technology, Dalian, 116024, PR China
Pages 379-393 | Received 06 May 1996, Accepted 21 Jun 1996, Published online: 20 Aug 2006
 

Abstract

A close relationship between the structural subunits of the known structure of Al60Mn11Ni4 and the unknown C31-Al60Mn11Ni4 has been found from their high-resolution electron microscopy (HREM) images. A space group Pmmn was derived from convergent-beam electron diffraction patterns, and a layer structural model of C31-Al60Mn11Ni4 was constructed on the basis of the structure of Al60Mn11Ni4. The simulated HREM images and electron diffraction patterns agree with the experimental results.

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