Thermo-mechanical Characterization of an Aged Ni45.3Ti39.7Hf10Pd5 Shape Memory Alloy.

Autor: Acar, E., Toker, G. P., Saedi, S., Tobe, H., Karaca, H. E.
Předmět:
Zdroj: JOM: The Journal of The Minerals, Metals & Materials Society (TMS); 2021, Vol. 73 Issue 2, p640-645, 6p
Abstrakt: Thermo-mechanical characterization of a Ni45.3Ti39.7Hf10Pd5 polycrystalline shape memory alloy after aging at 550°C for 3 h was conducted. Thermal cycling under constant stress, superelasticity and loading till failure tests were employed to reveal the shape memory and material properties. Recoverable shape memory strain of 3.8% was achieved under compressive stress of 500 MPa. The sample showed almost perfect superelasticity above 70°C with total recoverable strain of about 4%, but failed at 2340 MPa with compressive strain > 13% at 35°C, and aging was not found to significantly affect its shape memory behavior because of the low volume fraction of precipitates. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index