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http://elar.urfu.ru/handle/10995/27230
Название: | Microstructure evolution during warm working of Ti-5Al-5Mo-5V-1Cr-1Fe at 600 and 800°C |
Авторы: | Zherebtsov, S. V. Murzinova, M. A. Klimova, M. V. Salishchev, G. A. Popov, A. A. Semiatin, S. L. |
Дата публикации: | 2013 |
Библиографическое описание: | Microstructure evolution during warm working of Ti-5Al-5Mo-5V-1Cr-1Fe at 600 and 800°C / S. V. Zherebtsov, M. A. Murzinova, M. V. Klimova [et al.] // Materials Science and Engineering A. — 2013. — Vol. 563. — P. 168-176. |
Аннотация: | Microstructure evolution during compression to the true height strain 0.29, 0.69, or 1.2 at 600 and 800. °C of the Β-rich titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (VT22) with an initial lamellar microstructure was established using scanning and transmission electron microscopy. It was found that microstructure evolution at both temperatures was controlled primarily by substructure evolution within the Β phase. At 800. °C, extensive recovery within the Β phase resulted in the formation of a stable structure comprising subgrains ~1.5. μm in diameter. During deformation at this temperature, lamellae of the α phase fragmented via a boundary-grooving mechanism. Due to the sluggish diffusion kinetics, however, spheroidization at 800. °C was incomplete. At the lower processing temperature, recovery processes within the Β phase were much slower, leading to greater refinement of the Β matrix. The decomposition of the metastable Β phase during warm working, gave rise to very fine α-lath precipitates, which resulted in the formation of an ultrafine microstructure with a grain size of 0.5. μm. © 2012 Elsevier B.V. |
Ключевые слова: | MICROSTRUCTURE REFINEMENT PRECIPITATION SPEROIDIZATION THERMOMECHANICAL PROCESSING TITANIUM ALLOYS DIFFUSION KINETICS GRAIN SIZE LAMELLAR MICROSTRUCTURE MICROSTRUCTURE EVOLUTIONS MICROSTRUCTURE REFINEMENT PROCESSING TEMPERATURE RECOVERY PROCESS SCANNING AND TRANSMISSION ELECTRON MICROSCOPY SPEROIDIZATION SPHEROIDIZATION STABLE STRUCTURES SUBGRAINS SUBSTRUCTURE EVOLUTION THERMO-MECHANICAL PROCESSING TRUE HEIGHT ULTRA-FINE MICROSTRUCTURES WARM WORKING ALUMINUM PRECIPITATION (CHEMICAL) TITANIUM ALLOYS TRANSMISSION ELECTRON MICROSCOPY MICROSTRUCTURE |
URI: | http://elar.urfu.ru/handle/10995/27230 |
Идентификатор SCOPUS: | 84870835790 |
Идентификатор WOS: | 000315063000024 |
Идентификатор PURE: | 907207 |
ISSN: | 0921-5093 |
DOI: | 10.1016/j.msea.2012.11.042 |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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scopus-2013-0399.pdf | 1,7 MB | Adobe PDF | Просмотреть/Открыть |
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