Synchrotron in situ Studies of Mechanical Activation Treatment and γ-Radiation Impact on Structural-Phase Transitions and High-Temperature Synthesis Parameters During the Formation of γ-(TiAl) Compound | Sciact - CRIS-система Института катализа

Synchrotron in situ Studies of Mechanical Activation Treatment and γ-Radiation Impact on Structural-Phase Transitions and High-Temperature Synthesis Parameters During the Formation of γ-(TiAl) Compound Научная публикация

Журнал

Journal of Synchrotron Radiation
ISSN: 0909-0495 , E-ISSN: 1600-5775

Вых. Данные

Год: 2019, Том: 26, Номер: 5, Страницы: 1671-1678 Страниц : 8 DOI: 10.1107/s1600577519010014

Ключевые слова

mechanoactivation processing; γ-irradiation; powder materials; titanium aluminides; high-temperature synthesis; experimental complex; thermal explosion; induction heating; phase formation; structure formation.

Авторы

Loginova Marina ¹ , Sobachkin Alexey ¹ , Sitnikov Alexander ¹ , Yakovlev Vladimir ¹ , Filimonov Valeriy ^1,2 , Myasnikov Andrey ^1,3 , Sharafutdinov Marat ^3,4 , Tolochko Boris ^3,4 , Gradoboev Alexander ⁵

Организации

1	Polzunov Altai State Technical University
2	Institute for Water and Environmental Problems of Siberian Branch Russian Academy of Sciences
3	Institute of Solid State Chemistry and Mechanochemistry of Siberian Branch Russian Academy of Sciences
4	Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences
5	National Research Tomsk Polytechnic University, Lenin Avenue, Tomsk, 634050, Russian Federation

In situ synchrotron studies of structure and phase formation dynamics in mechanically activated (t = 7 min, power density 40 g) and mechanically activated with subsequent irradiation by γ-quanta 60Co powder mixture (Ti 64 wt% + Al) during high-temperature synthesis by the method of thermal explosion using induction heating are described. In situ high-temperature synthesis was carried out on the created experimental complex adapted for synchrotron X-ray diffraction methods. The sequence of formation and time–temperature interval of the metastable and main phases were determined. The impact of preliminary mechanical activation and of γ-irradiation on the macrokinetic parameters of the synthesis were studied experimentally in situ. It has been established that the impact of γ-irradiation on the mechanically activated powder mixture of the composition Ti 64 wt% + Al leads to a change in the thermal parameters of combustion: the maximum synthesis temperature and the burning rate decrease. The heating rate for the non-irradiated mixture is 204.8 K s−1 and that for the irradiated mixture is 81.6 K s−1. The dependences of mass fractions of the synthesized compounds on time and temperature were calculated from the stage of preheating until completion of the thermal explosion. A single-phase equilibrium product of the composition γ-(TiAl) is formed in γ-irradiated mechanically activated mixture when the system reaches maximum temperature. The synthesized product of the mechanically activated mixture without γ-irradiation contains 72% γ-(TiAl); TiAl3 (26%) and residual Ti (2%) are also observed.

Loginova M. , Sobachkin A. , Sitnikov A. , Yakovlev V. , Filimonov V. , Myasnikov A. , Sharafutdinov M. , Tolochko B. , Gradoboev A.
Synchrotron in situ Studies of Mechanical Activation Treatment and γ-Radiation Impact on Structural-Phase Transitions and High-Temperature Synthesis Parameters During the Formation of γ-(TiAl) Compound
Journal of Synchrotron Radiation. 2019. V.26. N5. P.1671-1678. DOI: 10.1107/s1600577519010014 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	30 мар. 2019 г.
Принята к публикации:	12 июл. 2019 г.
Опубликована в печати:	1 сент. 2019 г.

Web of science:	WOS:000484666200032
Scopus:	2-s2.0-85071771808
РИНЦ:	41678650
Chemical Abstracts:	2019:1729617
Chemical Abstracts (print):	173:175915
OpenAlex:	W2969281666

БД	Цитирований
Web of science	5
Scopus	9
OpenAlex	13