Synthesis creep behavior of Sn63Pb37 under the applied stress and electric current

Synthesis creep test of Sn63Pb37 alloy was conducted under the combination of tensile stress and direct electric current. Results indicate that the steady-state creep strain rate of Sn63Pb37 alloy increases with increasing the electric current and changes more drastically at low stress level than that at high stress level. The stress exponent in power law decreases linearly with increasing the electric current, while the creep activation energy increases with the square of electric current. To illuminate the electromechanical interaction in creep behavior, a modified Arrhenius type model involving the current effect was proposed.

► Creep test of Sn63Pb37 was conducted under the combination of tensile and DC.
► DC change the stress exponent and activation energy in creep power law.
► A modified Arrhenius type model involving the current effect was proposed.