Selective electron beam melting of a copper-chrome powder mixture
| Autor: | Fuad Osmanlic, Soroush Momeni, Carolin Körner, Ralf Guschlbauer |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Spinodal decomposition Scanning electron microscope Mechanical Engineering Metallurgy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Focused ion beam Copper Chromium chemistry Mechanics of Materials 0103 physical sciences Cathode ray General Materials Science 0210 nano-technology Powder mixture |
| Zdroj: | Materials Letters. 223:250-252 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2018.03.194 |
| Popis: | Additive manufacturing by selective electron beam melting (SEBM) was used to process a powder mixture consisting of elemental copper and chromium powders (nominal composition: Cu-25Cr). The melting temperatures of copper and chromium are largely different. As a result, the copper particles start melting while the chromium ones are still solid. Eventually, also the chromium particles get molten since the local temperatures during SEBM are rather high. The microstructure was analyzed by scanning electron microscopy (SEM) and focused ion beam (FIB)-SEM. It was observed that ultra-fine Cr particles are formed and distributed in the Cu matrix due to the fast cooling rate and subsequent spinodal decomposition. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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