Production of Shape Memory Cu-Zn-Sn alloy
AbstractIn this work Cu-Zn-Sn alloy which shows shape retention property was chosen and tested to determine shape retention and other properties. Firstly, elements of the alloy were mixed in required proportions (Cu-%30Zn-%5Sn). The alloy was melted in 1100ºC. Then the product was exposed directly to sudden cooling over the melt spinning unit while it is still melt. Thus, the formation of martensite phase was provided in the microstructure of alloy. The specimens were heat treated at different temperatures and examined for shape memory. The microstructures of the specimens were examined by optical, scanning electron microscopy (SEM) and X-ray microanalyses by EDX. SEM and X-Ray results show that the material constitutes β'-phase and meanwhile by means of plane that was seen in analyse of diffraction x-ray pattern it was held down that the material has 18R and 9R orthorhombic crystal structure.