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Comparison Of Physical Properties, Composition And Properties Of Titanium Nickel Wire
Nov 06, 2018

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

/g.cm-3

Melting point

/.C

Specific heat capacity

/J.(g.K)-1

Linear expansion coefficient

/K-1

Thermal conductivity

/W.(m.K)-1

The resistivity

Ω.cm

6.0~6.5
1240~13104.5~6.010×10-620.950~110


Mechanical properties of titanium nickel wire


HardnessTensile Strengthσb/MPaYield Strengthσ0.2/MPaElongationδ/%
MartensiteParent phaseAfter heat treatmentUntreated

Martensite

Parent phase
180~200200~250200~250
700~110050~200100~60020~60


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