Effects of Deformation on Microstructure of Cu-Zn-Ni Alloy

Authors : Emine ALDIRMAZ, Harun CELIK, İlhan AKSOY

Pages : 337-342

View : 23 | Download : 14

Publication Date : 2012-04-16

Article Type : Research Paper

Abstract :The thermal and mechanical effects on m i crostructure of Cu-12.44%Zn-4.75%Ni insert ignore into journalissuearticles values(wt%); alloy were investigated. T he effects mechanical on both rapidly cooled sample and slowly cooled sample obtained from Cu-Zn-Ni alloy were investigated by using scanning electron microscopy insert ignore into journalissuearticles values(SEM);, X-ray diffraction techniques insert ignore into journalissuearticles values(XRD);. The thermal energy changes of in the alloy were examined by means of differential scanning calorimetry insert ignore into journalissuearticles values(DSC);. As a result of SEM observations, annealing twins structures are observed in rapidly and slowly cooled samples. According to pictures of the SEM and XRD, the stress applied to samples caused to lose existing annealing twins, and led to formation of slip planes lying parallel to each other in between plates. The stress-strain behaviour is associated with applied heat treatment effect to samples. It’s shown that the intensities of XRD peaks to be decrease, as a result of the increase in cooling rate. This result indicates that density defects of crystal increases with rapidly cooled in the Cu-Zn-Ni alloy. In both samples of the thermal energy changes, at the process of diffusion transformation eutectoid separation reactions have been proved to exist.     
Keywords : Cu Zn Ni Alloy, Cooling Rate, XRD, Stress Strain Behaviour