Influence of Grain Size and Contact Temperature on the Tribological Behaviour of Shape Memory Ti49.3Ni50.7 Alloy

An experimental study investigating the influence of macro-, micro- and nanoscale structural refinement and contact temperatures in the range of 20−800 °C on the tribological characteristics of shape memory Ti 49.3 Ni 50.7 alloy processed via severe rolling with a pulse current and subsequent anneal...

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Bibliographic Details
Published in:Tribology letters 2017-12, Vol.65 (4), p.1-7, Article 131
Main Authors: Misochenko, A. A., Chertovskikh, S. V., Shuster, L. Sh, Stolyarov, V. V.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Coefficient of friction
Corrosion and Coatings
Friction
Grain size
Materials Science
Nanotechnology
Nickel base alloys
Original Paper
Physical Chemistry
Shape memory alloys
Surfaces and Interfaces
Temperature dependence
Theoretical and Applied Mechanics
Thin Films
Titanium base alloys
Tribology
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Summary:An experimental study investigating the influence of macro-, micro- and nanoscale structural refinement and contact temperatures in the range of 20−800 °C on the tribological characteristics of shape memory Ti 49.3 Ni 50.7 alloy processed via severe rolling with a pulse current and subsequent annealing at various temperatures is presented. Analysis revealed an increase in alloy strength characteristics, a decrease in the adhesive component of the friction coefficient and a decrease in the tendency to seizure in the course of friction with a decrease in grain size. The temperature dependence of the adhesive component of the friction coefficient for all structure states was found to have a maximum at 250–350 °C.
ISSN:1023-8883
1573-2711
DOI:10.1007/s11249-017-0917-6