Transformation of Sn-Cu alloy from white tin to gray tin

摘要

Sn-0.8 wt.% Cu alloy is prepared to investigate the transformation of white tin to gray tin. The relationship between transformation percentage and time is determined by measuring the areas of transformed gray tin, and the effect of cold rolling on the transformation is investigated. It is concluded that both the additions of copper to pure tin and the severe deformation are effective on the enhancement of transformation. The incubation period before initiation of transformation is also dependent on the cold reduction.