Austenite Formation in α-Phase Fe–Mn Alloy after Cold Plastic Working and Fast Heating by an Ar+ Ion Beam to 299°С
- Authors: Ovchinnikov V.V.1,2, Makarov E.V.1, Gushchina N.V.1
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Affiliations:
- Institute of Electrophysics, Ural Branch, Russian Academy of Sciences
- Ural Federal University Named after the First President of Russia B.N. Yeltsin
- Issue: Vol 120, No 12 (2019)
- Pages: 1207-1212
- Section: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/168883
- DOI: https://doi.org/10.1134/S0031918X19120123
- ID: 168883
Cite item
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
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