Mechanical and functional properties of amorphous-crystalline thin ribbons of Ti50Ni25Cu25 and Ti40.7Hf9.5Ni44.8Cu5 shape memory alloys

S. Belyaev, N. Resnina, V. Slesarenko

Research output

8 Citations (Scopus)

Abstract

Amorphous melt spun ribbons of Ti50Ni25Cu25 and Ti40.7Hf9.5Ni44.8Cu5 alloys were partially crystallized to different volume fraction of crystalline phase from 0 to 100 %. The mechanical and functional properties of amorphous-crystalline thin ribbons were studied. It was shown that the fully amorphous sample of Ti50Ni25Cu25 alloy was deformed elastically up to 2.2 % and then it was deformed plastically up to break. The fully amorphous sample of Ti40.7Hf9.5Ni44.8Cu5 alloy was deformed elastically up to failure and the plastic deformation was not observed. It was found that amorphous-crystalline samples demonstrated the shape memory effect on heating. The maximum recovered strain was 3.3 % in fully crystallized Ti50Ni25Cu25 alloy and it attended 5 % in Ti40.7Hf9.5Ni44.8Cu5 alloy. The Ti40.7Hf9.5Ni44.8Cu5 alloy demonstrated the two-way shape memory effect if the amorphous and crystalline phases coexisted in the sample.
Original languageEnglish
JournalSmart Materials and Structures
Volume20
Issue number8
DOIs
Publication statusPublished - 2011

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