Paper Title:
Shape of Moving Grain Boundary and its Influence on Grain Boundary Motion in Zinc
  Abstract

The migration of individual special [ ] 0 1 10 tilt grain boundary (GB) with Σ =15 and misorientation angle 29° in Zn bicrystal have been investigated. The stationary shape of migrating GB has been studied and the migration rate has been measured by optical microscopy in situ between 558 and 683 K using polarized light. In certain experimental runs the migrating GB is faceted and moves thermally activated. Its kinetics follows the Arrhenius type dependence despite the fact that shape of moving GB depends on temperature. After detachment from impurity cloud the [ ] 0 1 10 tilt GB migrates activationless in the temperature interval 618÷683 K. The detachment temperature is 618 K. The non-physically high value of the apparent migration activation enthalpy can appear due to the change of GB shape from faceted to smooth and back.

  Info
Periodical
Edited by
B.S. Bokstein and B.B. Straumal
Pages
183-188
DOI
10.4028/www.scientific.net/DDF.249.183
Citation
V. G. Sursaeva, B. B. Straumal, "Shape of Moving Grain Boundary and its Influence on Grain Boundary Motion in Zinc", Defect and Diffusion Forum, Vol. 249, pp. 183-188, 2006
Online since
January 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Christian Herzig, Maik Lohmann, Sergiy V. Divinski
101
Authors: Sandra Piazolo, David J. Prior, M.D. Holness, Andreas O. Harstad
Abstract:Annealing is an important mechanism of microstructural modification both in rocks and metals. In order to relate directly changes in...
333
Authors: Q.P. Kong, W.B. Jiang, P. Cui, Qian Feng Fang
Chapter 2: Invited Talks
Abstract:In recent years, we have investigated the grain boundary (GB) internal friction in high-purity Al bicrystals with a wide variety of...
33