โ Scribed by Yu.N. Ovchinnikov; I.M. Sigal
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The low-temperature creep characteristics of a iron were studied. The activation energy and activation volume were measured directly by differential temperature, strain rate, and stress techniques. The activation energy and volume were independent of temperature in the range 123-253"K, at a constant
The activation energy, H, the activation volume, w\*, and the frequency factor, Y, for the plastic deformation of niobium at low temperatures (T < 0.2 T,) were derived from creep tests. The values of H and e\* for r\* = 1 kg/mm2 were 0.75 eV and 47bS respectively, decreasing with increase in stress.
The scattering of phonons by solute atoms in concentrated, binary, substitutional alloys is re-examined, and the corresponding thermal resistivity at low temperatures is calculated for several alloys. Satisfactory agreement with experimentally determined values is obtained. It is shown that the solu