Abstract
The effect of antimony additions on the characteristics of melt-spun Pb- 12 wt.%Sn alloy was investigated. The dynamic resonance technique was applied to study the internal friction, Youngs modulus and thermal diffusivity. Also, the dependence of specific heat under constant pressure on Sb content was studied. Isothermal resistivity changes were used to trace the discontinuous precipitation in the studied alloys. It was suggested that inhibited boundary movement caused by Sb segregation at the sweeping reaction fronts retard and ultimately terminate the discontinuous precipitation process. Marked effect was observed with lower Sb addition. X-rays and differential thermal analysis were used to identify structure variations as bases to explain the observed results.
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