Study of phase transformations in Ni3Al superalloy after shock-wave loading / Kazantseva N.V., Greenberg B.A., Shorokhov E.V., Pirogov A.N., Dorofeev Y.A. // Physics of Metals and Metallography. - 2005. - V. 99, l. 5. - P. 535-544.

ISSN:
0031918X
Type:
Article
Abstract:
Phase transformations induced by pulsed shock-wave loading in a single crystal of the nickel super-alloy have been studied. The crystal was loaded by an impact with a steel plate (the maximum pressure on the sample surface was 100 GPa, and the pulse duration was 10 μs) and by the deceleration of explosion products at an obstacle (the maximum pressure was 20 GPa, and the pulse duration was 10 μs). Depending on the loading conditions, various pressure-drop gradients behind the shock front were realized. After loading at 20 GPa, the crystal has a high dislocation density; after loading at 100 GPa, a banded structure with misorientation bands directed along the 〈111〉 directions is formed. X-ray diffraction, neutron diffraction, and high-resolution transmission electron microscopy of the crystal subjected to shock-wave loading reveal an L12 → D022 phase transformation in it. Deformation microtwins are observed near microcracks in the D022 phase. Copyright © 2005 by Pleiades Publishing, Inc.
Author keywords:
Index keywords:
Crystal orientation; Dislocations (crystals); Neutron diffraction; Nickel alloys; Shock waves; Single crystals; Superalloys; Transmission electron microscopy; X ray diffraction analysis; Burgers vecto
DOI:
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Affiliations Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg, 620219, Russian Federation; All-Russia Research Institute of Technical Physics, Russian Federal Nuclear Center, Chelyabinsk oblast, 456770, Russian Federation
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Correspondence Address Kazantseva, N.V.; Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg, 620219, Russian Federation
Language of Original Document English
Abbreviated Source Title Phys. Met. Metallogr.
Source Scopus