Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding
Ni-based alloy powders with different contents of cobalt (Co) have been deposited on a 42CrMo steel substrate surface using a fiber laser. The effects of Co content on the microstructure, composition, hardness, and wear properties of the claddings were studied by scanning electron microscopy (SEM),...
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MDPI AG
2017-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/7/12/551 |
| _version_ | 1811259280538468352 |
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| author | Kaiming Wang Baohua Chang Yongping Lei Hanguang Fu Yinghua Lin |
| author_facet | Kaiming Wang Baohua Chang Yongping Lei Hanguang Fu Yinghua Lin |
| author_sort | Kaiming Wang |
| collection | DOAJ |
| description | Ni-based alloy powders with different contents of cobalt (Co) have been deposited on a 42CrMo steel substrate surface using a fiber laser. The effects of Co content on the microstructure, composition, hardness, and wear properties of the claddings were studied by scanning electron microscopy (SEM), an electron probe microanalyzer (EPMA), X-ray diffraction (XRD), a hardness tester, and a wear tester. The results show that the phases in the cladding layers are mainly γ, M7(C, B)3, M23(C, B)6, and M2B. With the increase in Co content, the amounts of M7(C, B)3, M23(C, B)6, and M2B gradually decrease, and the width of the eutectic structure in the cladding layer also gradually decreases. The microhardness decreases but the wear resistance of the cladding layer gradually improves with the increase of Co content. The wear resistance of the NiCo30 cladding layer is 3.6 times that of the NiCo00 cladding layer. With the increase of Co content, the wear mechanism of the cladding layer is changed from abrasive wear to adhesive wear. |
| first_indexed | 2024-04-12T18:27:52Z |
| format | Article |
| id | doaj.art-0dc71ee835b24a32847306c16e6b37db |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-04-12T18:27:52Z |
| publishDate | 2017-12-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-0dc71ee835b24a32847306c16e6b37db2022-12-22T03:21:10ZengMDPI AGMetals2075-47012017-12-0171255110.3390/met7120551met7120551Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser CladdingKaiming Wang0Baohua Chang1Yongping Lei2Hanguang Fu3Yinghua Lin4State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, ChinaSchool of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, ChinaInstitute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310014, ChinaNi-based alloy powders with different contents of cobalt (Co) have been deposited on a 42CrMo steel substrate surface using a fiber laser. The effects of Co content on the microstructure, composition, hardness, and wear properties of the claddings were studied by scanning electron microscopy (SEM), an electron probe microanalyzer (EPMA), X-ray diffraction (XRD), a hardness tester, and a wear tester. The results show that the phases in the cladding layers are mainly γ, M7(C, B)3, M23(C, B)6, and M2B. With the increase in Co content, the amounts of M7(C, B)3, M23(C, B)6, and M2B gradually decrease, and the width of the eutectic structure in the cladding layer also gradually decreases. The microhardness decreases but the wear resistance of the cladding layer gradually improves with the increase of Co content. The wear resistance of the NiCo30 cladding layer is 3.6 times that of the NiCo00 cladding layer. With the increase of Co content, the wear mechanism of the cladding layer is changed from abrasive wear to adhesive wear.https://www.mdpi.com/2075-4701/7/12/551laser claddingNi-based alloyCo contentmicrostructurewear resistance |
| spellingShingle | Kaiming Wang Baohua Chang Yongping Lei Hanguang Fu Yinghua Lin Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding Metals laser cladding Ni-based alloy Co content microstructure wear resistance |
| title | Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding |
| title_full | Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding |
| title_fullStr | Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding |
| title_full_unstemmed | Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding |
| title_short | Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding |
| title_sort | effect of cobalt on microstructure and wear resistance of ni based alloy coating fabricated by laser cladding |
| topic | laser cladding Ni-based alloy Co content microstructure wear resistance |
| url | https://www.mdpi.com/2075-4701/7/12/551 |
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