Microstructure evolution and improved tribological properties of laser deposited Fe-36Ni alloy coating with B addition
In this study, Invar alloy coatings with varying B content (1–6 wt%) were prepared by laser deposition to investigate the effects of B alloying on the microstructure, hardness, and wear resistance of coatings. The results indicated that the addition of B element refined the FCC dendritic of Invar al...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425018198 |
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| Summary: | In this study, Invar alloy coatings with varying B content (1–6 wt%) were prepared by laser deposition to investigate the effects of B alloying on the microstructure, hardness, and wear resistance of coatings. The results indicated that the addition of B element refined the FCC dendritic of Invar alloy coating and promoted the formation of a Ni2B + FCC eutectic structure, significantly enhancing the hardness of coating to a maximum of 770.5 HV0.2. When the B content reached 1 wt%, the wear rate of the coating decreased by 83.6 %, and the friction coefficient was also markedly reduced. The wear mechanisms of the coatings vary with different B contents, transitioning from pure adhesive wear to adhesive wear accompanied by partial abrasive wear, and further evolving into a hybrid mechanism of abrasive wear and fatigue wear. |
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| ISSN: | 2238-7854 |