Interphase Evolution and Defect Formation during Horizontally Directional Solidification Process of Sn-Zn Alloys

A. I. KOCIUBCZYK; W. DESROSIN; L. M. BOYCHO; C. E. SCHVEZOV; A. E. ARES

Orlando, Florida

Simposio; CAST SHOP FOR ALUMINUM PRODUCTION; 2015

THE MINERALS, METALS AND MATERIALS SOCIETY

In the present research, commercially pure Sn and Zn, and Sn-Zn alloy (Sn-1wt.%Zn, Sn-2wt.%Zn, Sn-4wt.%Zn, Sn-8wt.%Zn, Sn-8.9wt.%Zn, weight percent) were obtained by a horizontal directional solidification process with two opposite senses and heat extraction. The solidification process was realized uzing a horizontal furnace with two heat extraxtion systems at both ends. The temperature was measured using eight K-type thermocouples and an electronic recorder of temperature data. The resulting structures were analyzed using optional microscopy. From the solidification process the thermal and metallographic parameters were determined in all samples. The presence of defects in the solidified pieces was observed. Internal defects pretended to be dependent not only on the composition of the alloys under consideration but also on the size of the structures formed, also, on the velocities and accelerations of interphases, and on the variation of thermal gradiens. a model of the phenomenon from the first principles is presented.