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Damping behavior of TiNi-based shape memory alloys

✍ Scribed by W. Cai; X.L. Lu; L.C. Zhao

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
261 KB
Volume
394
Category
Article
ISSN
0921-5093

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✦ Synopsis

The damping behavior of TiNi-based alloys has been investigated by dynamic mechanical analyzer (DMA) instruments. It shows that an appropriate cold-rolling deformation on the martensitic Ti 50 Ni 50 alloy can enhance its damping capacity. The damping behavior of the Ti 49.2 Ni 50.8 alloy is aging condition dependent and the damping capacity peak value corresponding to the phase transformation increases due to the increase of the amount of boundaries between the martensite and parent phase as a result of the existence of the Ti 3 Ni 4 particles. The Ti 44 Ni 47 Nb 9 alloy possesses high damping capacity either during phase transformation or in the parent phase, which is very important for the engineering application.

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