Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr
Here, the corrosion properties of chromium (Cr) added to a copper-aluminum-nickel (Cu-Al-Ni) alloy were studied. Primarily, the alloy samples were prepared by increasing the percentages of Cr composition in the following series of 4%, 8% and 12% by keeping other alloying elements as constants. The a...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2018-08-01
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| Series: | Journal of the Mechanical Behavior of Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/jmbm-2018-0016 |
| _version_ | 1818689836728451072 |
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| author | Parameswaran P. Rameshbabu A.M. Navaneetha Krishnan G. Yogeshwaran R. Ramkumar R. |
| author_facet | Parameswaran P. Rameshbabu A.M. Navaneetha Krishnan G. Yogeshwaran R. Ramkumar R. |
| author_sort | Parameswaran P. |
| collection | DOAJ |
| description | Here, the corrosion properties of chromium (Cr) added to a copper-aluminum-nickel (Cu-Al-Ni) alloy were studied. Primarily, the alloy samples were prepared by increasing the percentages of Cr composition in the following series of 4%, 8% and 12% by keeping other alloying elements as constants. The alloy was made using the powder metallurgical technique. Consequently, hot forging was done on the sintered specimen. Both hypothetical and authentic densities were found for the hot forged samples which showed that the densities kept on increasing with the addition of Cr. The Cr embellishments were exposed using optical microscopy of varying magnifications. The corrosion properties achieved from the potentiostat showed that the corrosion resistance upsurges more than the other commercially available nickel-aluminum-bronze (NAB) alloys due to the Cr embellishments. The corroded surface was then investigated using scanning electron microscopy (SEM) which disclosed the formation of different κ phases along with an α matrix and other intermetallic phases in the present alloy. Furthermore, hardness tests were taken and these established that the hardness increases with Cr accompaniments. Thus, the present alloy can be endorsed as a novel material (Cu-Al-Ni-Cr) in the propellers of ships in which both hardness and corrosion resistant are obligatory. |
| first_indexed | 2024-12-17T12:16:26Z |
| format | Article |
| id | doaj.art-bc97cad618e2497db187c7ec19a4310f |
| institution | Directory Open Access Journal |
| issn | 0334-8938 2191-0243 |
| language | English |
| last_indexed | 2024-12-17T12:16:26Z |
| publishDate | 2018-08-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Journal of the Mechanical Behavior of Materials |
| spelling | doaj.art-bc97cad618e2497db187c7ec19a4310f2022-12-21T21:49:10ZengDe GruyterJournal of the Mechanical Behavior of Materials0334-89382191-02432018-08-01273-41647165710.1515/jmbm-2018-0016Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added CrParameswaran P.0Rameshbabu A.M.1Navaneetha Krishnan G.2Yogeshwaran R.3Ramkumar R.4Department of Mechanical Engineering, K. Ramakrishnan College of Technology, Samayapuram, Tiruchirapalli 621112, Tamil Nadu, India, Phone: +919080562028Tata Consultancy Services Limited, Bangalore 560066, Karnataka, IndiaDepartment of Mechanical Engineering, K. Ramakrishnan College of Technology, Samayapuram, Tiruchirapalli 621112, Tamil Nadu, IndiaDepartment of Mechanical Engineering, K. Ramakrishnan College of Technology, Samayapuram, Tiruchirapalli 621112, Tamil Nadu, IndiaDepartment of Mechanical Engineering, K. Ramakrishnan College of Technology, Samayapuram, Tiruchirapalli 621112, Tamil Nadu, IndiaHere, the corrosion properties of chromium (Cr) added to a copper-aluminum-nickel (Cu-Al-Ni) alloy were studied. Primarily, the alloy samples were prepared by increasing the percentages of Cr composition in the following series of 4%, 8% and 12% by keeping other alloying elements as constants. The alloy was made using the powder metallurgical technique. Consequently, hot forging was done on the sintered specimen. Both hypothetical and authentic densities were found for the hot forged samples which showed that the densities kept on increasing with the addition of Cr. The Cr embellishments were exposed using optical microscopy of varying magnifications. The corrosion properties achieved from the potentiostat showed that the corrosion resistance upsurges more than the other commercially available nickel-aluminum-bronze (NAB) alloys due to the Cr embellishments. The corroded surface was then investigated using scanning electron microscopy (SEM) which disclosed the formation of different κ phases along with an α matrix and other intermetallic phases in the present alloy. Furthermore, hardness tests were taken and these established that the hardness increases with Cr accompaniments. Thus, the present alloy can be endorsed as a novel material (Cu-Al-Ni-Cr) in the propellers of ships in which both hardness and corrosion resistant are obligatory.https://doi.org/10.1515/jmbm-2018-0016electro-chemical corrosionhot-forgingnab alloypowder metallurgyscanning electron microscope |
| spellingShingle | Parameswaran P. Rameshbabu A.M. Navaneetha Krishnan G. Yogeshwaran R. Ramkumar R. Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr Journal of the Mechanical Behavior of Materials electro-chemical corrosion hot-forging nab alloy powder metallurgy scanning electron microscope |
| title | Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr |
| title_full | Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr |
| title_fullStr | Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr |
| title_full_unstemmed | Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr |
| title_short | Study of the corrosion properties in a hot forged Cu-Al-Ni alloy with added Cr |
| title_sort | study of the corrosion properties in a hot forged cu al ni alloy with added cr |
| topic | electro-chemical corrosion hot-forging nab alloy powder metallurgy scanning electron microscope |
| url | https://doi.org/10.1515/jmbm-2018-0016 |
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