INFLUENCE OF THE AGEING ON ELASTIC AND ANELASTIC PROPERTIES OF Sn - 38 WT. % Pb EUTECTIC ALLOY
Investigations of changes of the dynamic Young's modulus <i>E </i>and the decrement <i>δ </i>are carried out caused by swaging and subsequent ageing of the eutectic Sn - 38 wt.% Pb alloy showing superplastic properties just at room temperature. The features of the elastic and anelastic behaviour of the alloy, which are found out, are regarded as a result of its instability arising during crystallization and under the action of external mechanical stresses.