Evolution of Dislocation Structure in a Ni3Al Single Crystal Under the Conditions of High-Temperature Superplasticity


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Аннотация

The evolution of defective structure in a single crystal of a Ni3Al-base intermetallic with iron and chromium additives under the conditions of superplasticity (δ = 140%) is studied by transmission electron microscopy. The tensile deformation is performed a 1150°C. Planar flaws and recrystallized grains are detected in the fractured zone of the metal. The mechanisms of high-temperature superplasticity of alloys based on Ni3Al intermetallic are discussed.

Авторлар туралы

N. Kazantseva

Institute of Metals Physics of the Mikheev Ural Branch of the Russian Academy of Sciences; Ural State University for Lines of Communication

Email: petroprom2013@yandex.ru
Ресей, Ekaterinburg; Ekaterinburg

N. Stepanova

Institute of Metals Physics of the Mikheev Ural Branch of the Russian Academy of Sciences

Email: petroprom2013@yandex.ru
Ресей, Ekaterinburg

N. Vinogradova

Institute of Metals Physics of the Mikheev Ural Branch of the Russian Academy of Sciences

Email: petroprom2013@yandex.ru
Ресей, Ekaterinburg

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