Paper Title:
Analysis of Creep Deformation Due to Grain-Boundary Diffusion/Sliding
  Abstract

For steady-state deformation caused by grain-boundary diffusion and viscous grain-boundary sliding, the creep rate of regular polyhedral grains is analyzed by the energy-balance method. For the microstructure, the grain-grain interaction increases the degree of symmetry of diffusional field, resulting in a decrease of the effective diffusion distance. Meanwhile, the viscous grain-boundary sliding is found to decrease the creep rate. The present analysis reveals that the grain-size exponent is dependent on the grain size and the grain-boundary viscosity: the exponent becomes unity for small grain sizes and/or high viscosity, while it is three for large grain sizes and/or low viscosity.

  Info
Periodical
Key Engineering Materials (Volumes 345-346)
Edited by
S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim
Pages
565-568
DOI
10.4028/www.scientific.net/KEM.345-346.565
Citation
B. N. Kim, K. Hiraga, K. Morita, H. Yoshida, "Analysis of Creep Deformation Due to Grain-Boundary Diffusion/Sliding", Key Engineering Materials, Vols. 345-346, pp. 565-568, 2007
Online since
August 2007
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Price
$32.00
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