The Velocity of Dislocations

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概要

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• The theory of Mott and of Fisher, Hart, and Pry for the production of slip bands is considered. This theory suggests that the kinetic energy of dislocations is what keeps glide on a slip band going; it also asserts that the process is stopped by the back stress resulting from dislocation loops previously generated at the Frank-Read source. Experimental observations giving the damping experienced by a dislocation and giving the velocity of glide are used to show that the potential energy of a dislocation is in general more than a hundred times the kinetic energy. Present evidence indicates that the rate of glide decreases by a factor of about fifty during the production of a single slip band in aluminum. Present data also indicates that twinning requires rapid dislocations whereas slip seems to demand slow dislocations. A way of reconciling these observations is suggested.

• 社団法人日本物理学会の論文
• 1955-08-05

著者

• Koehler J.

  University Of Illinois

• Koehler J.

  University Of Illinois Urbana

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