Fatigue strength of lead in the normal and superconducting states
B. I. VerkinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRN. M. GrinbergPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRI. M. LyubarskiiPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRV. V. PustovalovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRL. F. YakovenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
ABI
Annotatsiya
The fatigue strength of 99.9995%-pure lead at a temperature of 4.2°K in the normal and superconducting states and subjected to cyclical bending is studied. It is shown that in the superconducting state durability of lead on the average is 40% less than its durability in the normal state. Plastic strain in the superconducting state is greater per cycle than in the normal state during the initial deformation cycles. It is proposed that this difference also exists in subsequent stages of the deformation and is one of the reasons that durability is a function of the state of a superconductor.
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