SYMPOSIA PAPER Published: 01 January 2007
STP45237S

Functional Properties of Nanostructured Ti-50.0 at % Ni Alloys

Source

Ti-50 at % Ni alloy wire is subjected to cold-rolling (true strain e=0.3–1.9) and postdeformation annealing (200–700°C range). For all levels of cold work, the maxima of recovery strain and stress are obtained after annealing in the 350–400°C range. For the moderately-to-high cold-worked material (e=0.3–0.88), this annealing leads to polygonization, while for the severely cold-worked one (e=1.9), to the material nanocrystallization (grains of 50–80 nm in size). Nanocrystallized alloy generates 30 % higher recovery stresses (up to 1450 MPa) and 10 % higher completely recoverable strains (more than 8 %) as compared to the polygonized alloy, while having comparable mechanical properties in tension.

Author Information

Demers, V.
Ecole de Technologie Superieure, Montreal, Quebec, Canada
Brailovski, V.
Ecole de Technologie Superieure, Montreal, Quebec, Canada
Prokoshkin, S.
Moscow State Institute of Steel and Alloys, Moscow, Russia
Inaekyan, K.
Moscow State Institute of Steel and Alloys, Moscow, Russia
Bastarash, E.
Ecole de Technologie Superieure, Montreal, Quebec, Canada
Khmelevskaya, I.
Moscow State Institute of Steel and Alloys, Moscow, Russia
Dobatkin, S.
Baikov Institute of Metallurgy and Material Science of RAS, Moscow, Russia
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Details
Developed by Committee: E08
Pages: 34–44
DOI: 10.1520/STP45237S
ISBN-EB: 978-0-8031-6237-2
ISBN-13: 978-0-8031-4511-5