The alloys with shape memory effect have the ability to recover its original shape after being deformed plastically. Technological applications of these alloys cover several areas such as medical, security and robotics. The most commonly used alloys are those based on Ni-Ti compound. However, these alloys are very reactive with oxygen and also present high termal and tension hysteresis. Moreover, the alloys based on Cu are advantageous in respect of NiTi alloys, due to the low cost of the alloy elements as the minor termal and tension hysteresis and also lower reactivity with oxygen. There are several manufacturing routes to process alloys with shape memory Cu-based leading to excellent mechanical properties, such as melting and rapid solidification. However, the powder metallurgy which represents an economical alternative is still few explored and has great potentialto produce parts with good mechanical and shape memory properties. Therefore, this study aimed to determine the viability of powder metallurgy route for the preparation of Cu based shape memory alloys, specifically Cu11.8Al-3.2Ni-3Mn-0,5Zr, in order to obtain proper microstructure and correlate it with the mechanical strength.
News published in Agência FAPESP Newsletter about the scholarship: