Paper Title:
Dynamic Evaluation of Strength-Structure Properties by the Determination of Activation Volume and Mean Slip Distance
  Abstract

Measurements of the activation volume and mean slip distance were used in the dynamic dislocation-defect analysis to reveal the dislocation-obstacle evolution with strain. Due to the large effect of point defect mobility above 250 K on the strain rate sensitivity, fine-grained Al specimens with the grain-boundaries sealed and unsealed as vacancy sinks were tested at 300 K as the reference behaviour. The activation distance diagrams revealed that the artificially aged products in AA6111 and naturally aged extruded AA6063 can be used to examine the effect of chopping-up of particles on the ductility of the samples. Thus a means to examine strength-structure-ductility of specific products have been devised.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
2192-2197
DOI
10.4028/www.scientific.net/MSF.539-543.2192
Citation
S. Saimoto, "Dynamic Evaluation of Strength-Structure Properties by the Determination of Activation Volume and Mean Slip Distance", Materials Science Forum, Vols. 539-543, pp. 2192-2197, 2007
Online since
March 2007
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Price
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