Tunneling of screw dislocations in α-Fe |
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| Authors: | F Kroupa L Lejček |
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| Institution: | 1. Institute of Physics, Czechosl. Acad. Sci., Prague, Na Slovance 2, 180 40, Praha 8, Czechoslovakia
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| Abstract: | A model of tunneling of 1/2 111] screw dislocations in b.c.c. metals from sessile to glissile core configurations described by dislocation splittings is proposed and numerical estimates for α-Fe are derived. The critical shear stress of the order of 50 kp/mm2 should be temperature independent up to 8 K. |
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