Fatigue Behavior of Solid-State Additive Manufactured Inconel 625
| Autor: | Paul G. Allison, B.J. Phillips, J.B. Jordon, N. Hardwick, D.Z. Avery, O. G. Rivera, J. Su, C. J. T. Mason |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science General Engineering Solid-state Nucleation 02 engineering and technology Raw material 021001 nanoscience & nanotechnology Inconel 625 complex mixtures 01 natural sciences Substrate (building) Fatigue resistance 0103 physical sciences General Materials Science Composite material 0210 nano-technology Deposition process |
| Zdroj: | JOM. 70:2475-2484 |
| ISSN: | 1543-1851 1047-4838 |
| DOI: | 10.1007/s11837-018-3114-7 |
| Popis: | A transformative hybrid solid-state additive manufacturing process provides a new path to fabricate or repair components with wrought-like performance. In this work, the fatigue behavior of Inconel 625 (IN625) manufactured via a high-shear deposition process is quantified for the first time. In this unique process, feedstock is deposited via a hollow non-consumable rotating cylindrical tool, thereby generating heat and plastically deforming the feedstock through controlled pressure as consecutive layers are metallurgically bonded upon a substrate. To quantify the fatigue behavior of the as-deposited IN625, stress-life experiments were conducted, where improved fatigue resistance was observed compared with the feedstock. Post-mortem analysis of the as-deposited IN625 revealed a similar fatigue nucleation and growth mechanism to the feedstock for a majority of the specimens tested in this study. Last, a microstructure-sensitive fatigue life model was utilized to elucidate structure–property fatigue mechanism relations of the as-deposited and feedstock IN625 materials. |
| Databáze: | OpenAIRE |
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