Relaxation of mechanical stresses in Ni3Al single crystals irradiated with high-power ion beams

A. N. Tyumentsev, M. V. Tret'yak, A. D. Korotaev, Yu P. Pinzhin, D. A. Shchipakin, G. E. Remnev, I. F. Isakov

Research output: Contribution to journalArticlepeer-review


Transmission electron microscopy and microhardness measurements were used to study mechanisms of strengthening and the formation of the defect substructure in the course of relaxation of thermomechanical stresses generated in single crystals of Ni3Al by high-power ion beams (HIBs) of carbon and hydrogen at a power density of 5 × 107 and 108 W/cm2. The main structural types of plastic flow localization zones that are formed as a result of activation of collective modes of relaxation of stresses generated by HIBs were revealed. The fine defect structure of these zones was studied in detail. The nature and possible mechanisms of deformation localization in the zone of ion-beam modification are discussed.

Original languageEnglish
Pages (from-to)618-625
Number of pages8
JournalPhysics of Metals and Metallography
Issue number6
Publication statusPublished - Dec 2000

ASJC Scopus subject areas

  • Metals and Alloys

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