Steady state creep characteristics of the eutectic Pb-Sb alloy

The change in the steady state creep rate of Pb-Sb eutectic alloy is studied under constant stresses ranging from 3.45 to 5.2 MPa and at different temperatures ranging from 433 to 503 K. The strain rate sensitivity parameter (m) varied between 0.33 and 0.46 in the testing temperature range. The activation energy of the steady state creep amounted to 96 kJ/mol in the temperature range from 473 to 503 K, characterizing the self-diffusion mechanism of Pb. The analysis of the microstructural variations confirms that the above-mentioned mechanisms are expected to take place during the investigated steady state creep stage