As a practical alloy, ti ni alloy has the best performance compared with other shape memory alloys. The ni-ti alloy entered the practical stage in 1969 in the use of pipe joints on aircraft, but its shape memory mechanism was not understood until the 1980s due to its complex phase transition and difficulty in making single crystals.
Physical properties of titanium nickel wire
The density of
Specific heat capacity
Linear expansion coefficient
Mechanical properties of titanium nickel wire
|Hardness||Tensile Strengthσb/MPa||Yield Strengthσ0.2/MPa||Elongationδ/%|
|Martensite||Parent phase||After heat treatment||Untreated|