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.
|Number of pages||6|
|State||Published - Feb 2021|
Bibliographical noteFunding Information:
This work was supported in part by NSF CMMI-15-38665, the NASA EPSCOR program, under Grant No. NNX11AQ31A and the KY EPSCoR RID program under grant no. 3049024332.
© 2020, The Minerals, Metals & Materials Society.
ASJC Scopus subject areas
- Materials Science (all)
- Engineering (all)