Discontinuouslow temperature deformation of ZrSn alloys

Abstract

Abstract Mechanical and microstructure properties have been investigated for ZrSn alloys with 0.74, 2.85, 4.27 and 6.19 wt% Sn deformed at 4.2, 77 and 300 K. The tin content plays an important role in the deformation behaviour of the alloys. Serrated yielding has been observed during deformation of ZrSn alloy samples with higher tin content if they are deformed at 4.2 K. Twinning has been found to be the microstructure characteristic for ZnSn alloy deformed at 4.2 K. A correlation between twins and stress drops has been discussed. It follows from that that the origin of the stress drops at low temperatures may be of a mechanical nature.