Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy
To improve the wear resistance of high-strength and high-conductivity Cu–Cr–Zr alloys in high-speed and heavy load friction environments, coatings including Ni–Cu, Ni–Cu-10(W,Si), Ni–Cu–10(Mo,W,Si), and Ni–Cu–15(Mo,W,Si) (with an atomic ratio of Mo,W to Si of 1:2) were prepared using coaxial powder-...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/1/284 |
| _version_ | 1797625385678012416 |
|---|---|
| author | Xiaojun Zhao Qi Zhong Pengyuan Zhai Pengyu Fan Ruiling Wu Jianxiao Fang Yuxiang Xiao Yuxiang Jiang Sainan Liu Wei Li |
| author_facet | Xiaojun Zhao Qi Zhong Pengyuan Zhai Pengyu Fan Ruiling Wu Jianxiao Fang Yuxiang Xiao Yuxiang Jiang Sainan Liu Wei Li |
| author_sort | Xiaojun Zhao |
| collection | DOAJ |
| description | To improve the wear resistance of high-strength and high-conductivity Cu–Cr–Zr alloys in high-speed and heavy load friction environments, coatings including Ni–Cu, Ni–Cu-10(W,Si), Ni–Cu–10(Mo,W,Si), and Ni–Cu–15(Mo,W,Si) (with an atomic ratio of Mo,W to Si of 1:2) were prepared using coaxial powder-feeding laser cladding technology. The microstructure and wear performance of coatings were chiefly investigated. The results revealed that (Mo,W)Si<sub>2</sub> and MoNiSi phases are found in the Ni–Cu–10(Mo,W,Si) and Ni–Cu–15(Mo,W,Si) coating. WSi<sub>2</sub> phases are found in the Ni–Cu–10(W,Si) coating. The degree of grain refinement in Ni–Cu–10(Mo,W,Si) was greater than that of the Ni–Cu–10(W,Si) coating after the effect of Mo. The excellent wear resistance and micro-hardness of the Ni–Cu–15(Mo,W,Si) coating were attributed to the increase in its dispersion phase, which were approximately 34.72 mg/km and 428 HV, 27.1% and 590% higher than the Cu–Cr–Zr substrate, respectively. The existence of silicide plays an important role in grain refinement due to the promotion of nucleation and the inhibition of grain growth. In addition, the wear mechanism transformed from adhesive wear in the Ni–Cu coating with no silicides to abrasive wear in the Ni–Cu–15(Mo,W,Si) coating with high levels of silicides. |
| first_indexed | 2024-03-11T09:55:49Z |
| format | Article |
| id | doaj.art-3e18b2a92edd480c811f51f8accb9560 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:55:49Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-3e18b2a92edd480c811f51f8accb95602023-11-16T15:49:34ZengMDPI AGMaterials1996-19442022-12-0116128410.3390/ma16010284Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr AlloyXiaojun Zhao0Qi Zhong1Pengyuan Zhai2Pengyu Fan3Ruiling Wu4Jianxiao Fang5Yuxiang Xiao6Yuxiang Jiang7Sainan Liu8Wei Li9School of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaNew Technology Promotion Institute of China Ordnance Industries, Beijing 100089, ChinaNew Technology Promotion Institute of China Ordnance Industries, Beijing 100089, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Resource Processing and Bioengineering, Central South University, Changsha 410083, ChinaPowder Metallurgy Institute, Central South University, Changsha 410083, ChinaTo improve the wear resistance of high-strength and high-conductivity Cu–Cr–Zr alloys in high-speed and heavy load friction environments, coatings including Ni–Cu, Ni–Cu-10(W,Si), Ni–Cu–10(Mo,W,Si), and Ni–Cu–15(Mo,W,Si) (with an atomic ratio of Mo,W to Si of 1:2) were prepared using coaxial powder-feeding laser cladding technology. The microstructure and wear performance of coatings were chiefly investigated. The results revealed that (Mo,W)Si<sub>2</sub> and MoNiSi phases are found in the Ni–Cu–10(Mo,W,Si) and Ni–Cu–15(Mo,W,Si) coating. WSi<sub>2</sub> phases are found in the Ni–Cu–10(W,Si) coating. The degree of grain refinement in Ni–Cu–10(Mo,W,Si) was greater than that of the Ni–Cu–10(W,Si) coating after the effect of Mo. The excellent wear resistance and micro-hardness of the Ni–Cu–15(Mo,W,Si) coating were attributed to the increase in its dispersion phase, which were approximately 34.72 mg/km and 428 HV, 27.1% and 590% higher than the Cu–Cr–Zr substrate, respectively. The existence of silicide plays an important role in grain refinement due to the promotion of nucleation and the inhibition of grain growth. In addition, the wear mechanism transformed from adhesive wear in the Ni–Cu coating with no silicides to abrasive wear in the Ni–Cu–15(Mo,W,Si) coating with high levels of silicides.https://www.mdpi.com/1996-1944/16/1/284laser claddingCu–Cr–Zr alloysmental silicideswear resistance |
| spellingShingle | Xiaojun Zhao Qi Zhong Pengyuan Zhai Pengyu Fan Ruiling Wu Jianxiao Fang Yuxiang Xiao Yuxiang Jiang Sainan Liu Wei Li Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy Materials laser cladding Cu–Cr–Zr alloys mental silicides wear resistance |
| title | Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy |
| title_full | Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy |
| title_fullStr | Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy |
| title_full_unstemmed | Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy |
| title_short | Microstructure and Wear Resistance of Laser-Clad Ni–Cu–Mo–W–Si Coatings on a Cu–Cr–Zr Alloy |
| title_sort | microstructure and wear resistance of laser clad ni cu mo w si coatings on a cu cr zr alloy |
| topic | laser cladding Cu–Cr–Zr alloys mental silicides wear resistance |
| url | https://www.mdpi.com/1996-1944/16/1/284 |
| work_keys_str_mv | AT xiaojunzhao microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT qizhong microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT pengyuanzhai microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT pengyufan microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT ruilingwu microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT jianxiaofang microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT yuxiangxiao microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT yuxiangjiang microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT sainanliu microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy AT weili microstructureandwearresistanceoflasercladnicumowsicoatingsonacucrzralloy |