Abstract:
Within the framework of the theory of dynamic interaction of defects (DID) high-strain rate deformation of an irradiated ferromagnet with giant magnetostriction is analyzed. It is shown that giant magnetostriction leads to the occurrence of dry friction of dislocations by prismatic dislocation loops. An analytical expression for the contribution of dry friction to the dynamic yield strength of metals with giant magnetostriction is obtained. Numerical estimates show that this contribution can increase the dynamic yield strength by tens of percent. Conditions determining the region of existence of the dry friction effect are formulated. The magnitude of the effect and its region of existence are determined by the magnetic properties of the metal.
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