خصائص زحف السبيكة الثلاثية (Pb-61.9wt%Sn)-2wt%Zn

This study examines the creep behavior of (Pb-61.9wt%Sn)-2wt%Zn ternary alloy. The steady state creep for ternary alloy was investigated under different applied stresses of 5.25, 6.554 and 7.802 MPa at temperatures ranging from 363 to 433K. The results of creep characteristics show two deformation regions (below and above 393 K). The creep strain rate increases and creep lifetime decreases as the applied stress level and temperature increase. Both the stress exponent(n) and activation energy (Q) were measured to identify the controlling mechanism for creep deformation. Grain boundary sliding is the possible creep mechanism within the given stress level and temperature. Microstructure examination of the deformed samples below and above the transition temperatures was performed by scanning electron microscope (SEM) with energy dispersive X-ray spectroscopy (EDX).