Study of Microscopic Origins of Radiation Hardening of Eurofer 97 in Simulation Experiment with Ion Irradiation

S. V. Rogozhkin; A. A. Nikitin; A. A. Khomich; N. A. Iskandarov; V. V. Khoroshilov; A. A. Bogachev; A. A. Lukyanchuk; O. A. Raznitsyn; A. S. Shutov; T. V. Kulevoy; P. A. Fedin; A. L. Vasiliev; M. Yu. Presnyakov

doi:10.1134/S2075113319020357

Study of Microscopic Origins of Radiation Hardening of Eurofer 97 in Simulation Experiment with Ion Irradiation

Authors: Rogozhkin S.V.¹^,2, Nikitin A.A.¹^,2, Khomich A.A.¹, Iskandarov N.A.¹, Khoroshilov V.V.¹, Bogachev A.A.¹^,2, Lukyanchuk A.A.¹, Raznitsyn O.A.¹, Shutov A.S.¹, Kulevoy T.V.¹, Fedin P.A.¹, Vasiliev A.L.³, Presnyakov M.Y.³
Affiliations:
1. Alikhanov Institute for Theoretical and Experimental Physics, National Research Center Kurchatov Institute
2. National Research Nuclear University MEPhI
3. National Research Center Kurchatov Institute
Issue: Vol 10, No 2 (2019)
Pages: 333-338
Section: Materials of Power Engineering and Radiation-Resistant Materials
URL: https://journals.rcsi.science/2075-1133/article/view/207857
DOI: https://doi.org/10.1134/S2075113319020357
ID: 207857

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract
About the authors
References
Statistics

Abstract

Low-temperature radiation hardening of prospective structural steel Eurofer 97 as the material for the first wall of the DEMO fusion reactor is studied in this work. Specimens of Eurofer 97 steel were irradiated with Fe ions up to 10 dpa at temperatures of 250, 300 and 400°C. Irradiated samples were studied by transmission electron microscopy and atom probe tomography. TEM study of irradiated samples showed preferential formation of dislocation loops at all temperatures of irradiation. Pair-correlation function analysis detected the initial stage of matrix solid solution decomposition of Eurofer 97 steel only at the temperature of 400°C. Detected microscopic changes and calculated hardening in the framework of the DBH (dispersed barrier hardening) model have shown that formation of dislocation loops is the main origin of low temperature radiation hardening of Eurofer 97 under irradiation with Fe ions with fluence up to 10 dpa.

Keywords

ferritic-martensitic steel, Eurofer 97, radiation hardening, dislocation loops, transmission electron microscopy, atom probe tomography, simulation experiment, ion irradiation

Username
Password
Remember me

Forgot password?	Register

Username
Password
Remember me

Forgot password?	Register

Study of Microscopic Origins of Radiation Hardening of Eurofer 97 in Simulation Experiment with Ion Irradiation

Full Text

Abstract

Keywords

About the authors

This website uses cookies