Improving the Fatigue Crack Propagation Resistance and Damage Tolerance of 2524-T3 Alloy with Amorphous Electroless Ni-P Coating
| Autor: | Lai Chen, Junlin Li, Zhiyi Liu, Diping Zeng, Song Bai |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering Alloy Fatigue testing 02 engineering and technology Substrate (electronics) engineering.material 021001 nanoscience & nanotechnology Indentation hardness Amorphous solid Fatigue crack propagation 020303 mechanical engineering & transports 0203 mechanical engineering Coating Mechanics of Materials engineering General Materials Science Composite material 0210 nano-technology Damage tolerance |
| Zdroj: | Journal of Materials Engineering and Performance. 27:881-888 |
| ISSN: | 1544-1024 1059-9495 |
| Popis: | The surface microhardness, as well as the fatigue crack propagation (FCP) resistance of 2524-T3 alloy, is improved by producing a 20-μm-thick amorphous electroless Ni-12% P coating on its surface. Compared to the substrate, this deposited EN coating possesses higher strength properties and exhibits a greater ability of accommodating the plastic deformation at the fatigue crack tip, thereby remarkably improving the FCP resistance in near-threshold and early Paris regimes. Regardless of the similar FCP rates in Paris regime (ΔK ≥ 16.2 MPa m0.5), the coated sample exhibits extended Paris regime and enhanced damage tolerance. |
| Databáze: | OpenAIRE |
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