Investigation of the Thermal State of Parts to Justify the Possibility of Additive Forming of Nitinol Blanks In Situ
| Autor: | I.S. Chulkov, A.L. Goncharov, E.K. Titarev |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
In situ
Materials science 020502 materials Mechanical Engineering Metallurgy Titanium nickelide chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Nickel 0205 materials engineering chemistry Mechanics of Materials Cathode ray General Materials Science Thermal state 0210 nano-technology Titanium |
| Zdroj: | Key Engineering Materials. 887:46-53 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.887.46 |
| Popis: | In this paper, the substantiation of the possibility of additive forming of nitinol billets by simultaneous surfacing of two titanium and nickel wires with an electron beam in vacuum is given. The method of mathematical modeling shows the possibility of forming several molten pools of liquid metal on the bead being deposited immediately behind the main pool for remelting the formed material. The modes of the electron beam for the formation of the main and two additional remelting pools due to the deflection of the beam are determined taking into account the technological capabilities of the installation. The residence time of the metal in the liquid state is calculated for various additive forming modes. Remelting makes it possible to increase the residence time in the liquid state by a multiple of the molten pools number. This significantly improves the conditions for mixing the raw materials and reduces the heterogeneity of the material. |
| Databáze: | OpenAIRE |
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