Dislocation Damping at High Temperatures

摘要

An unpinned dislocation damping model (based on the Mott‐Nabarro solution hardening theory) was previously used to explain internal friction at room temperature and is now extended into the high‐temperature range. With the model it is possible to explain the high‐temperature internal friction which has been observed in the kilocycle frequency range for measurements made at very low strain amplitudes. In addition, the damping due to dislocation climb is considered.