https://doi.org/10.1140/epjp/s13360-024-05614-0
Regular Article
Characterization of microstructure and properties of Ti35 alloy and its high-fluence hydrogen irradiation-induced surface exfoliation
1
Key Laboratory of Material Physics, Ministry of Education, School of Physics, Zhengzhou University, 450001, Zhengzhou, China
2
Key Laboratory of Nuclear Technology Application and Radiation Protection in Astronautics (Nanjing University of Aeronautics and Astronautics), Ministry of Industry and Information Technology, 210016, Nanjing, China
3
International Joint Laboratory for Integrated Circuits Design and Application, Ministry of Education, School of Physics, Zhengzhou University, 450001, Zhengzhou, China
Received:
27
June
2024
Accepted:
3
September
2024
Published online:
15
September
2024
The Ti35 alloy is highly promising for nuclear industry applications due to its exceptional performance. However, the impacts of processing and service conditions on the alloy are not yet fully comprehended. Here we examine the effects of plastic deformation and high-fluence hydrogen irradiation on its microstructure and properties. Results show that cold rolling induces the formation of “white grains” in the Ti35 alloy, and post-annealing results in the formation of numerous twinning and significant slips. These processing methods significantly enhance the alloy’s hardness, yield strength, and tensile strength. Hydrogen irradiation results in the formation of titanium hydrides within the alloy, ultimately causing surface exfoliation and intergranular cracking. Subsequent atomistic simulations reveal changes in the surface behavior of the alloy during irradiation and identify the stages that contribute to hydrogen embrittlement, thereby corroborating the experimental observations. This study offers valuable insights into the microstructure and property evolution of the Ti35 alloy, as well as its irradiation resistance in advanced nuclear energy systems.
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjp/s13360-024-05614-0.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
