Austenite Formation in α-Phase Fe–Mn Alloy after Cold Plastic Working and Fast Heating by an Ar+ Ion Beam to 299°С


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

The accelerated Ar+ ion irradiation at a fluence of 1.2 × 1015 cm–2 for 4 seconds formed 6.2% austenite in a cold-worked Fe–6.29 at % Mn alloy with a structure of α ferrite. The related ion beam heating of a foil 25 μm thick is 299 ± 5°C, according to temperature monitoring. The content of manganese calculated from Mössbauer spectroscopy data in α and γ phases after irradiation is 5.5 and 17.1 at %, respectively. Grounds for the activation of low-temperature atomic mobility in the alloy are discussed in this paper. The mobility was shown to not be caused by the formation of radiation defects and radiation-enhanced diffusion. Nanoscale dynamic effects, resulting in the possible viscous flow of material at the front of post-cascade shock waves propagating in a undamped mode, play a vital role.

About the authors

V. V. Ovchinnikov

Institute of Electrophysics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin

Author for correspondence.
Email: viae05@rambler.ru
Russian Federation, Ekaterinburg, 620016; Ekaterinburg, 620002

E. V. Makarov

Institute of Electrophysics, Ural Branch, Russian Academy of Sciences

Email: viae05@rambler.ru
Russian Federation, Ekaterinburg, 620016

N. V. Gushchina

Institute of Electrophysics, Ural Branch, Russian Academy of Sciences

Email: viae05@rambler.ru
Russian Federation, Ekaterinburg, 620016

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2019 Pleiades Publishing, Ltd.