Self-propagating phase transformations in metastable media induced by ion bombardment

Vladimir V. Ovchinnikov

doi:10.1117/12.174598

1 May 1994 Self-propagating phase transformations in metastable media induced by ion bombardment

Vladimir V. Ovchinnikov

Proceedings Volume 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum; (1994) https://doi.org/10.1117/12.174598
Event: XVI International Symposium on Discharges and Electrical Insulation in Vacuum, 1994, Moscow-St. Petersburg, Russian Federation

Abstract

Resistometry, X-ray and NGR methods have been used to investigate phase transformations long-range type in submillimeter layers of Fe₆₉Ni₃₁ and Pd₂AuFe alloys under ion bombardment. In situ measurements were made simultaneously resistivity and temperature on plate specimens 100 - 400 micrometers thick. The observed transformations are considered to be a new type of radiation-induced self-spreading phase transformation similar to combustion and detonation phenomena, propagating at a speed equal to or exceeding that of sound in the material. In accordance with the proposed model the transformations take place in metastable media at solitary wave fronts generated as a result of evolution of atom collision cascades. Equations are proposed describing the emergence of undamped solitary waves with self- regulating amplitudes which bring about such transformation.

Citation Download Citation

Vladimir V. Ovchinnikov "Self-propagating phase transformations in metastable media induced by ion bombardment", Proc. SPIE 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum, (1 May 1994); https://doi.org/10.1117/12.174598

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