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Synthesis and evaluation of shape memory effect of Cu-Al-Ni shape memory alloys

The present investigation aims at studying the mechanical properties like microstructure, grain refinement shape memory effect and martensite transformation behavior of Cu-Al-Ni Shape Memory Alloys and it has been studied thorough EDAX, Optical Microscopy (OM) and Differential scanning Calorimetry (DSC). From the investigation it is found that shape memory effect of the Cu-Al-Ni alloys is able to display at a specific composition of about 12-14 wt.%for aluminum and 3-5 wt.% for nickel. Bend test is used to study the properties of shape memory alloys.Various mechanical tests were carried out on the specimen which shows maximum shape memory effect. It is observed that the composition of Cu(81.8) Al(13.7) Ni(4.5) shows the best shape memory effect and it is calculated to be 95.66 (%). It is found that alloys show better hardness property as well.