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Nanomaterials 2019, 9(1), 74; https://doi.org/10.3390/nano9010074

Nanocrystalline Cr-Ni Alloying Layer Induced by High-Current Pulsed Electron Beam

1
Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China
2
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
*
Authors to whom correspondence should be addressed.
Received: 29 November 2018 / Revised: 28 December 2018 / Accepted: 30 December 2018 / Published: 7 January 2019
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Abstract

In this investigation, chromium (Cr) was adopted as an alloying element on a nickel substrate, and the alloying process was materialized via high-current pulsed electron beam (HCPEB) irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were also conducted for microstructure characterization. The results showed that after HCPEB irradiation a nanocrystalline Cr-Ni alloying layer was formed and numerous dislocations were generated, resulting in a great deal of diffusion paths for Cr elements. Moreover, properties including hardness, wear and electrochemical performance were significantly improved after HCPEB irradiation, which was mainly due to the formation of the nanocrystalline Cr–Ni alloying layer. In addition, each strengthening mechanism that contributed to the hardness of the HCPEB-irradiated sample was mathematically analyzed, and solid solution strengthening was found to be of great importance. View Full-Text
Keywords: high-current pulse electron beam (HCPEB); surface alloying; microstructure; tribological property; corrosion resistance high-current pulse electron beam (HCPEB); surface alloying; microstructure; tribological property; corrosion resistance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhang, L.; Peng, C.-T.; Guan, J.; Lv, P.; Guan, Q.; Lu, R. Nanocrystalline Cr-Ni Alloying Layer Induced by High-Current Pulsed Electron Beam. Nanomaterials 2019, 9, 74.

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