Synthesis of Ti-5Al, Ti-6Al-7Nb, and Ti-22Al-25Nb alloys from elemental powders using powder-bed fusion additive manufacturing
| Autor: | D. V. Masaylo, Igor Polozov, Anatoly Popovich, Vadim Sufiiarov, A. V. Grigoriev |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Annealing (metallurgy) Scanning electron microscope Mechanical Engineering Metallurgy Metals and Alloys Niobium Titanium alloy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention chemistry Optical microscope Mechanics of Materials law 0103 physical sciences Materials Chemistry Selective laser melting 0210 nano-technology Spectroscopy Tensile testing |
| Zdroj: | Journal of Alloys and Compounds. 763:436-445 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.05.325 |
| Popis: | A study has been undertaken to verify the feasibility of using powder-bed fusion additive manufacturing to fabricate Ti-5Al, Ti-6Al-7Nb, and Ti-22Al-25Nb alloys from elemental powders. Selective Laser Melting was used to produce bulk samples from mechanical mixtures of elemental powders for Ti-5Al, Ti-6Al-7Nb, and Ti-22Al-25Nb alloys. For Ti-Al-Nb system, annealing was carried out at 1050–1350 °C for 1–3,5 h followed by furnace cooling. The systematic characterization of the samples was done using scanning electron microscopy (SEM), optical microscopy (OM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), and tensile testing. It was shown that using elemental powders it is possible to synthesize titanium alloys by Selective Laser Melting. In case of Ti-5Al, powder-bed fusion of powders resulted in a homogeneous microstructure, while for Ti-6Al-7Nb and Ti-22Al-25Nb a subsequent heat treatment at 1350 °C temperature is required to fully dissolve niobium particles. |
| Databáze: | OpenAIRE |
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