Enhanced Corrosion and Tribological Properties of GO-Reinforced Cu Matrix Nanocomposites Fabricated by ARB Process.
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| Title: | Enhanced Corrosion and Tribological Properties of GO-Reinforced Cu Matrix Nanocomposites Fabricated by ARB Process. |
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| Authors: | Golmohammadi, M.1 (AUTHOR), Salehi, M.1 (AUTHOR) maryamsalehi@iust.ac.ir, Koohdar, H. R.1 (AUTHOR) |
| Source: | Metallurgical & Materials Transactions. Part A. Jun2025, Vol. 56 Issue 6, p2074-2089. 16p. |
| Subjects: | Microhardness testing, Electrolytic corrosion, Copper, Mechanical wear, Grain refinement |
| Abstract: | In this study, microstructure, corrosion behavior, and tribological properties of Cu–GO nanocomposites produced by accumulative roll bonding (ARB) process up to 4 cycles have been studied through microstructure observation, microhardness testing, pin-on-disk wear-testing, and electrochemical measurements in 3.5-wt pct NaCl solution. Microstructural studies show ARB can remarkably decrease the grain size and improve the dispersion of GO in the Cu matrix as well as the connection improvement between Cu layers. It is observed that the highest hardness value of about 140 HV is obtained with the increasing number of cycles up to 4 due to the strain-induced grain refinement and presence of secondary phase GO. Moreover, wear rate and weight loss of the samples were continuously decreased up to cycle 2 and after that they were grown and delamination wear became the dominant mechanism with increasing the ARB cycles. In addition, corrosion behavior shows that the corrosion current density (0.7 × 10−3 A cm−2) of the nanocomposite was decreased after 4 cycles and the best anti-corrosion property for forming the passive films was provided. The coarse microstructure in Cu-annealed sheet leads to accelerating galvanic corrosion. [ABSTRACT FROM AUTHOR] |
| Copyright of Metallurgical & Materials Transactions. Part A is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | In this study, microstructure, corrosion behavior, and tribological properties of Cu–GO nanocomposites produced by accumulative roll bonding (ARB) process up to 4 cycles have been studied through microstructure observation, microhardness testing, pin-on-disk wear-testing, and electrochemical measurements in 3.5-wt pct NaCl solution. Microstructural studies show ARB can remarkably decrease the grain size and improve the dispersion of GO in the Cu matrix as well as the connection improvement between Cu layers. It is observed that the highest hardness value of about 140 HV is obtained with the increasing number of cycles up to 4 due to the strain-induced grain refinement and presence of secondary phase GO. Moreover, wear rate and weight loss of the samples were continuously decreased up to cycle 2 and after that they were grown and delamination wear became the dominant mechanism with increasing the ARB cycles. In addition, corrosion behavior shows that the corrosion current density (0.7 × 10−3 A cm−2) of the nanocomposite was decreased after 4 cycles and the best anti-corrosion property for forming the passive films was provided. The coarse microstructure in Cu-annealed sheet leads to accelerating galvanic corrosion. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 10735623 |
| DOI: | 10.1007/s11661-025-07760-1 |
