Effect of Ni and Mn additions on the damping characteristics of Cu-Al-Fe based high temperature shape memory alloys

Applicability of LPBF for producing Cu-11Al-5Ni-4Fe wt.% with shape memory properties

“…On the other hand, at elevated temperature (350 • C), the COM and HT7 present high values (0.090 and 0.083) because both suffer a more effective austenite transformation. Santosh et al [53], who researched the Cu-Al-Fe alloy and its damping capacity, demonstrate similar values (0.058-0.062) at high temperatures. The activation was conducted by the compressive stress applied and the temperature due to the large FCC present.…”

Design and experimental study of a flexible finger rehabilitation robot driven by shape memory alloy

“…The shape memory effect of SMA means that when the temperature is much less than the phase transition temperature of SMA, the SMA is loaded, and the residual strain still exists after unloading. In this case, the SMA is heated to the phase transition temperature, the martensite is transformed into austenite, the residual strain gradually disappears, and the SMA returns to the state before loading [23][24][25]. The double-pass memory effect means that the SMA wire will return to its original shape at low temperatures when the temperature drops after it deform after being energized.…”

Dynamic mechanical damping analysis of up/step-quenched Cu-Zn-Sn-based shape memory alloys

“…Damping properties are largely sensitive to SMA composition, microstructure, and defect concentration like vacancies and dislocations [17]. These microstructural characteristics can be altered significantly by the application of certain thermal treatment procedures, suggesting that heat treatment have effect on damping properties [18]. Several studies have been carried out on the effect of heat treatment on the damping properties of Cu-based SMAs, among these works include Alaneme et al [19], Hsu et al [20], Li et al [21], and Gang-Ling et al [22].…”