| Microstructural Evolution and Mechanical Evaluation of a Laser-Induced Composite Coating on a Ni-Based Superalloy during Thermal Exposure | |
| Li, Yuebing1; He, Yanming1; Lu, Chuanyang1; Zheng, Wenjian1; Yang, Jianguo1; Wang, Donghong2; Wang, Limei1; Sun, Yuan3; Gao, Zengliang1 | |
| Corresponding Author | He, Yanming(heyanming@zjut.edu.cn) ; Sun, Yuan(yuansun@imr.ac.cn) |
| 2019-05-01 | |
| Source Publication | MATERIALS
 |
| ISSN | 1996-1944 |
| Volume | 12Issue:9Pages:16 |
| Abstract | A Ni-17Mo-7Cr-based superalloy was laser surface-modified to improve its tribological properties. Si particles were employed as coating materials. Si melted on the surface of the alloy during the process, triggering the formation of Mo6Ni6C carbides and Ni-Si intermetallics. A defect-free coating obtained was mostly made up of primary Mo6Ni6C and -Ni31Si12, as well as a eutectic structure of (1)-Ni3Si and -Ni-based solid solution (-Ni (s.s)). The volume fraction of hard reinforcements (Mo6Ni6C, -Ni31Si12, and (1)-Ni3Si) reached up to 85% in the coating. High-temperature microstructural stability of the coating was investigated by aging the coating at 1073 K for 240-480 h, to reveal its microstructural evolution. In addition, the mechanical performance of the coating was investigated. The nanoscale elastic modulus and hardness of Mo6Ni6C, -Ni31Si12, and -Ni (s.s) were characterized using the nanoindentation tests. The nanoscratch tests were performed to measure the local wear resistance of the coating. Lastly, the Vickers hardness distribution across the cross-section of the coating before and after thermal exposure was compared. The work performed provides basic information understanding the microstructural evolution and mechanical performance of laser-induced coatings on Ni-based superalloys. |
| Keyword | Ni-based superalloy laser surface modification thermal exposure microstructure mechanical property |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province |
| DOI | 10.3390/ma12091439 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51475426] ; National Natural Science Foundation of China[51405439] ; National Natural Science Foundation of China[51705461] ; Natural Science Foundation of Zhejiang Province[LY17E050019] ; Natural Science Foundation of Zhejiang Province[LQ16E060004] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000469757500080 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133738 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | He, Yanming; Sun, Yuan |
| Affiliation | 1.Zhejiang Univ Technol, Inst Proc Equipment & Control Engn, Hangzhou 310014, Zhejiang, Peoples R China 2.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai 200240, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Dept Superalloy, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Yuebing,He, Yanming,Lu, Chuanyang,et al. Microstructural Evolution and Mechanical Evaluation of a Laser-Induced Composite Coating on a Ni-Based Superalloy during Thermal Exposure[J]. MATERIALS,2019,12(9):16. |
| APA | Li, Yuebing.,He, Yanming.,Lu, Chuanyang.,Zheng, Wenjian.,Yang, Jianguo.,...&Gao, Zengliang.(2019).Microstructural Evolution and Mechanical Evaluation of a Laser-Induced Composite Coating on a Ni-Based Superalloy during Thermal Exposure.MATERIALS,12(9),16. |
| MLA | Li, Yuebing,et al."Microstructural Evolution and Mechanical Evaluation of a Laser-Induced Composite Coating on a Ni-Based Superalloy during Thermal Exposure".MATERIALS 12.9(2019):16. |
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