Migration of Vacancies to Stress Centers

Author: Vermilya, Jay J.

Year: 1956

Degree: Engineer's thesis

Advisor: Aroeste, Henry

Committee Member: Unknown, Unknown

Option: Aeronautics

DOI: 10.7907/J43D-4D95

Abstract

The activation energy for motion of a vacancy in an edge dislocation width is considered by a modification of the method of Bartlett and Dienes. The results indicate an expected trend of motion toward the center of the width in the compressed half with a decreasing activation energy from edge to center. On the basis of the model used there is little tendency to form nonequilibrium vacancy doublets by this mechanism.

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