Investigation of heat treatment effect on physical properties of cualniti quaternary shape memory alloys

In this study, three different CuAlNiTi alloys produced by arc melter methods with addition different rate Ti element. The part of alloys exposed to heat treatment at 800 oC and then quenched into liquid nitrojen (-196 oC), alcohol (0 oC) and ice-brined (+6 oC). DSC ( Differantial Scaning Calorimetry) measurement of non heat treated ( main sample ) and quenched at three conditions after heat treatment were done, it could be seen that heat treatment were increased the phose transformation temperature. The quenching at alcohol and ice-brined water were increased phose transformation temperature abount 100 oC. Besides, changes of microstructure were determined by using Nikon Eclipse MA200 optical micrograph and SEM measurement systems. The grain boundry was seen clearly for alcohol and ice-brined water quenched materials and martensite plates were seen. Crystal structures of materials were determined by Bruker Discover D8 X-ray difractograms at room temperature.