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)
aCollege of Science, Inner Mongolia University of Technology, Hohhot 010051, China; bCollege 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.
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.))
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