Synchrotron in situ studies of mechanical activation treatment and г-radiation impact on structural-phase transitions and high-temperature synthesis parameters during the formation of г-(TiAl) compound; Journal of Synchrotron Radiation; Vol. 26, iss. 5
| Parent link: | Journal of Synchrotron Radiation Vol. 26, iss. 5.— 2019.— [P. 1671-1678] |
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| Körperschaft: | |
| Weitere Verfasser: | , , , , , , , , |
| Zusammenfassung: | Title screen 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. |
| Sprache: | Englisch |
| Veröffentlicht: |
2019
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| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1107/S1600577519010014 |
| Format: | MixedMaterials Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663348 |
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| 200 | 1 | |a Synchrotron in situ studies of mechanical activation treatment and г-radiation impact on structural-phase transitions and high-temperature synthesis parameters during the formation of г-(TiAl) compound |f M. V. Loginova, A. V. Sobachkin, A. A. Sitnikov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 330 | |a 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. | ||
| 461 | |t Journal of Synchrotron Radiation | ||
| 463 | |t Vol. 26, iss. 5 |v [P. 1671-1678] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a mechanoactivation processing | |
| 610 | 1 | |a γ-irradiation | |
| 610 | 1 | |a powder materials | |
| 610 | 1 | |a titanium aluminides | |
| 610 | 1 | |a high-temperature synthesis | |
| 610 | 1 | |a experimental complex | |
| 610 | 1 | |a thermal explosion | |
| 610 | 1 | |a induction heating | |
| 610 | 1 | |a phase formation | |
| 610 | 1 | |a structure formation | |
| 610 | 1 | |a порошковые материалы | |
| 610 | 1 | |a алюминиды | |
| 610 | 1 | |a высокотемпературный синтез | |
| 610 | 1 | |a экспериментальные разработки | |
| 610 | 1 | |a тепловой взрыв | |
| 610 | 1 | |a индукционный нагрев | |
| 610 | 1 | |a фазообразование | |
| 701 | 1 | |a Loginova |b M. V. |g Marina Vladimirovna | |
| 701 | 1 | |a Sobachkin |b A. V. |g Aleksey Viktorovich | |
| 701 | 1 | |a Sitnikov |b A. A. |g Aleksandr Andreevich | |
| 701 | 1 | |a Yakovlev |b V. O. |g Vladimir Olegovich | |
| 701 | 1 | |a Filimonov |b V. Yu. |g Valery Yurjevich | |
| 701 | 1 | |a Myasnikov |b A. B. |g Andrey Borisovich | |
| 701 | 1 | |a Sharafutdinov |b M. R. |g Marat | |
| 701 | 1 | |a Tolochko |b B. P. |g Boris Petrovich | |
| 701 | 1 | |a Gradoboev |b A. V. |c physicist |c Professor of Yurga technological Institute of Tomsk Polytechnic University, Doctor of technical sciences |f 1952- |g Aleksandr Vasilyevich |3 (RuTPU)RU\TPU\pers\34242 |9 17773 | |
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