Publication:
Crystallization Features of Rapidly Quenched Ti50Ni20Cu30 Amorphous Alloys after High-Pressure Torsion

Дата
2020
Авторы
Shelyakov, A. V.
Sundeev, R. V.
Khabibullina, I. A.
Sitnikov, N. N.
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Научные группы
Организационные подразделения
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Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
© 2020, Pleiades Publishing, Ltd.Abstract: The effect of severe plastic deformation under high-pressure torsion (HPT) on the structural properties of rapidly quenched alloys belonging to the quasi-binary TiNi–TiCu system containing 30 at % of copper was studied. The studies were performed by scanning electron microscopy, X-ray diffraction analysis, and differential scanning calorimetry. Structural studies have demonstrated that the high-pressure torsion of the amorphous Ti50Ni20Cu30 alloy leads to the partial nanocrystallization of its amorphous state. An increase in the strain value leads to an appreciable change in the character of crystallization in the DSC curves. The crystallization peaks split in the region of lower temperatures; i.e., the regions of possible low-temperature crystallization are formed. It has been established that high-pressure torsion decreases the crystallization heat of alloys with a high copper content after heating with respect to their initial amorphous state obtained after melt quenching. After DSC crystallization, the structure heterogeneous in a specimen cross section with stratification of its structural elements by sizes was formed in the alloy. The structure formed in the regions of the partial nanocrystallization of the amorphous state after crystallization was more finely grained than the structure in the major specimen volume. The obtained results convincingly demonstrate the effect of high-pressure torsion on the formation of a crystalline structure from the amorphous Ti50Ni20Cu30 alloys.
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Crystallization Features of Rapidly Quenched Ti50Ni20Cu30 Amorphous Alloys after High-Pressure Torsion / Shelyakov, A.V. [et al.] // Physics of the Solid State. - 2020. - 62. - № 5. - P. 733-738. - 10.1134/S1063783420050285
URI
https://www.doi.org/10.1134/S1063783420050285
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85085016520&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000534799200001
 https://openrepository.mephi.ru/handle/123456789/21805
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