1. Shape-memory alloy Ti - 45% Ni - 10% Nb with a wide hysteresis of the martensitic transformation can be used for thermomechanical
coupling of pipelines. Disassembled thermomechanical clutches can be stored at room temperature and assembled with heating
to a temperature somewhat exceeding
t
room; the joint can be easily disassembled by RSME under deep cooling.
2. Treatment of alloy Ti - 45% Ni - 10% Nb by the recommended method provides the following characteristics of shape recovery:
a reversible deformation of high-temperature SME of up to 8%, a degree of shape recovery of up to 60–80%, a temperature range
of shape recovery from + 30 to + 90°C, and a reversible deformation of the RSME of 1–2%.
3. The deformation that induces the SME in the considered alloy can be performed from −10 to −70°C at ε=10–12%; the thermomechanical
clutches can be stored at a temperature of up to +30°C; the parts can be coupled with the help of a thermomechanical clutch
in a temperature range from +30 to +100°C. The coupling is easily detachable after deep cooling due to the realization of
the reversible SME.
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 19–22, September, 2000.