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Chin. Phys. B, 2009, Vol. 18(6): 2464-2468    DOI: 10.1088/1674-1056/18/6/057
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Experimental verification of Foreman dislocation model

Zhao Chun-Wang(赵春旺)a), Xing Yong-Ming(邢永明)a), and Bai Pu-Cun(白朴存)b)
a College of Science, Inner Mongolia University of Technology, Hohhot 010051, China; b College of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
Abstract  We present a strain analysis of an edge dislocation core, and a detailed discussion of the Foreman dislocation model. In order to examine the model, the quantitative measurement of strain field around an edge dislocation in aluminum is performed, and high-resolution transmission electron microscopy and geometric phase analysis are employed to map the strain field of the edge dislocation core in aluminum. The strain measurements are compared with the Foreman dislocation model, showing that they are in good agreement with each other when 0.7 ≤ a ≤ 1.5.
Keywords:  dislocation      strain      high-resolution transmission electron microscopy      geometric phase analysis  
Received:  03 July 2008      Revised:  12 January 2009      Accepted manuscript online: 
PACS:  61.72.Ff (Direct observation of dislocations and other defects (etch pits, decoration, electron microscopy, x-ray topography, etc.))  
  61.72.Bb (Theories and models of crystal defects)  
  61.72.Hh (Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.))  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10862002 and 10562003).

Cite this article: 

Zhao Chun-Wang(赵春旺), Xing Yong-Ming(邢永明), and Bai Pu-Cun(白朴存) Experimental verification of Foreman dislocation model 2009 Chin. Phys. B 18 2464

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