Investigation the mechanical properties of the directionally solidified Sn100-x-Zn8.8-Agx alloys

Abstract

Sn 100-x -Zn 8.8 -Ag x (x=0.15, 0.3, 0.7, 1.0, 3.0, 10.0 wt.%) alloys have been prepared by using vacuum melting furnace and casting furnace. Then the samples have been directionally solidified upwards with a constant furnace temperature (500 o C) at different solidification rates (8.3-790 mm/s) in a Bridgman type directional solidification furnace. The effect of solidification rate (V) on ultimate tensile strength (s u ) and compressive yield strength (s c ) were investigated. The dependency of ultimate tensile strength and yield strength on solidification rate were determined by the linear regression analysis. It has been found that the increases of the solidification rate refines the microstructure, as a result of this the ultimate tensile strength and yield strength increases. The experimental results compared with the literature.