Evolution of the temperature field during deformation and fracture of specimens of coarse-grained and ultrafine-grained titanium

Evolution of the temperature field during deformation and fracture of specimens of coarse-grained and ultrafine-grained titanium

Bibliographische Detailangaben
Parent link:Russian Journal of Nondestructive Testing
Vol. 47, iss. 10.— 2011.— [P. 701-706]
Körperschaft: Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Лаборатория №34 (Тепловых методов контроля)
Weitere Verfasser: Sharkeev Yu. P. Yury Petrovich, Vavilov V. P. Vladimir Platonovich, Skripnyak V. A., Klimenov V. A. Vasily Aleksandrovich, Belyavskaya O. A., Kozulin A. A., Tolmachev A. I.
Zusammenfassung:Title screen
Studies of the deformation and evolution of temperature fields in flat specimens of BT1-0titanium in the Coarse-Grained (CG) and nanostructured/ultrafine-grained (NS/UFG) states andBT6 titanium alloy were performed. The yield and ultimate stresses for NS/UFG BT1-0 titanium aretwice as high as those for the CG state and are comparable with the characteristics of the BT6 alloy. Itwas found that the ultimate strain before damage of NS/UFG titanium specimens that are tensionedat a constant deformation rate of 6.5 × 10-3 s-1 decreases by a factor of 2. In the region of a macro-scopic localization of a plastic deformation the temperature abruptly rises and reaches the maximumvalues in the crack formation zone. An abrupt temperature increase in the zones of localization of plas-tic deformations and crack formation is observed in specimens with both the CG and NS/UFG states.Comparing the experimental data on the temperature distributions on the surfaces of strained CG andNS/UFG titanium specimens shows that a macroscopic plastic deformation develops more uniformlyin BT1-0 titanium in the NS/UFG state. Under identical loading conditions, the heat release rate ishigher for BT1-0 titanium in the NS/UFG state
Режим доступа: по договору с организацией-держателем ресурса
Sprache:Englisch
Veröffentlicht: 2011
Schlagworte:
электронный ресурс
труды учёных ТПУ
Online-Zugang:http://link.springer.com/article/10.1134%2FS1061830911100147
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=636946

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