اختبارات الزحف في سبيكة الإيوتكتك Sn-Pb ذات اللدونة الفائقة عند درجات الحرارة العالية

Abstract EN

The creep behavior of Pb–Sn eutectic alloy has been investigated.

Constant tensile stress creep experiments were carried out in the temperature range from 323 to 433 K and under constant stresses 4.1, 5.3, and 6.3 MPa.

The creep data obtained are examined by the conventional analysis of steady-state creep.

Attention has been paid to the influence of temperature on creep curves, the stress sensitivity parameter and apparent activation energy of creep.

The apparent activation energy and stress exponent for creep were determined as approximately 60 kJ/mol and 4, respectively.

The values of n and Q are sensitive to the processes controlling creep deformation.

Optical microscope was used to examine the microstructure of the samples before and after creep deformation to determine the mechanisms of creep deformation