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Chin. Phys. B, 2018, Vol. 27(9): 096102    DOI: 10.1088/1674-1056/27/9/096102
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Theoretical derivation of the crystallographic parameters of polytypes of long-period stacking ordered structures with the period of 13 and 14 in hexagonal close-packed system

Li Ye(叶礼)1, Dong-Shan Zhao(赵东山)1, Yuan-Lin Zhuang(庄园林)1, Shuang-Feng Jia(贾双凤)1, Jia-Ping Zhou(周嘉萍)1, Jia-Nian Gui(桂嘉年)1, Jian-Bo Wang(王建波)1,2
1 School of Physics and Technology, Center for Electron Microscopy, MOE Key Laboratory of Artificial Micro-and Nano-structures, and Institute for Advanced Studies, Wuhan University, Wuhan 430072, China;
2 Department Science and Technology on High Strength Structural Materials Laboratory, Central South University, Changsha 410083, China
Abstract  

Based on crystallographic theory, there are 63 kinds of polytypes of 13H long-period stacking order (LPSO) structure, 126 kinds of polytypes of 14H LPSO structure, 120 kinds of polytypes of 39R LPSO structure, and 223 kinds of polytypes of 42R LPSO structure in a hexagonal close-packed (HCP) system, and their stacking sequences and space groups have been derived in detail. The result provides a theoretical explanation for the various polytypes of the LPSO structure.

Keywords:  magnesium alloy      LPSO phase      theoretical derivation  
Received:  19 January 2018      Revised:  11 May 2018      Accepted manuscript online: 
PACS:  61.50.Ah (Theory of crystal structure, crystal symmetry; calculations and modeling)  
  61.66.Dk (Alloys )  
  68.37.Ma (Scanning transmission electron microscopy (STEM))  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant Nos. 51371130, 51171130, and 51271134), the Fundamental Research Funds for the Central Universities, China, and the Open Research Fund of Science and Technology on High Strength Structural Materials Laboratory, Central South University, China.

Corresponding Authors:  Dong-Shan Zhao     E-mail:  dszhao@whu.edu.cn

Cite this article: 

Li Ye(叶礼), Dong-Shan Zhao(赵东山), Yuan-Lin Zhuang(庄园林), Shuang-Feng Jia(贾双凤), Jia-Ping Zhou(周嘉萍), Jia-Nian Gui(桂嘉年), Jian-Bo Wang(王建波) Theoretical derivation of the crystallographic parameters of polytypes of long-period stacking ordered structures with the period of 13 and 14 in hexagonal close-packed system 2018 Chin. Phys. B 27 096102

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