On the creep mechanism of metals at low temperatures
V. I. StartsevPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRV. P. SoldatovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRA. I. OsetskiiPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
ABI
Abstract
The temperature dependence of the jump in the creep rate in cadmium and zinc single crystals at the instant of a small increment ΔT in the temperature is studied in the 1.5–80° K range. It is shown that below some characteristic temperature Θ the behavior of this dependence sharply contradicts the thermally activated creep predicted by theory as well as that following from the hypothesis of thermal heating of a crystal because of plastic deformation. A deduction is made that at temperatures below Θ the thermally activated creep mechanism is replaced by a quantum mechanism.
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