The Elastic-Plastic Transition During Nanoindentation of Titanium Nitride


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Аннотация

The onset of plasticity during nanodeformation of a bulk TiN specimen is studied by the nanoindentation. It is shown that with a high density of dislocations in the specimen surface layer (mechanical polishing) plasticity in TiN initiates smoothly under an average contact pressure of 18.1 GPa. Hence, with a spherical approximation of the Berkovich tip, the yield strength of TiN at the nanoscale is determined to be 14.5 GPa.

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Авторлар туралы

S. Dub

Bakul Institute for Superhard Materials

Хат алмасуға жауапты Автор.
Email: lz@ism.kiev.ua
Украина, vul. Avtozavods’ka 2, Kiev, 04074

V. Belous

National Science Center “Kharkiv Institute of Physics and Technology”

Email: lz@ism.kiev.ua
Украина, vul. Akademichna 1, Kharkiv, 61108

G. Tolmacheva

National Science Center “Kharkiv Institute of Physics and Technology”

Email: lz@ism.kiev.ua
Украина, vul. Akademichna 1, Kharkiv, 61108

O. Kaidash

Bakul Institute for Superhard Materials

Email: lz@ism.kiev.ua
Украина, vul. Avtozavods’ka 2, Kiev, 04074

A. Lukyanov

Frantsevich Institute for Problems of Materials Science

Email: lz@ism.kiev.ua
Украина, vul. Krzhizhanovs’kogo 3, Kiev, 03680

Yu. Ushchapovskii

Bakul Institute for Superhard Materials

Email: lz@ism.kiev.ua
Украина, vul. Avtozavods’ka 2, Kiev, 04074

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