Towards direct metal laser fabrication of Cu-based shape memory alloys
| Autor: | Gonzalo Reyes Donoso, Magdalena Walczak, Esteban Ramos Moore, Jorge Andres Ramos-Grez |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Fabrication
Materials science Mechanical Engineering Alloy Metallurgy 02 engineering and technology Shape-memory alloy engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Laser 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences law.invention Selective laser sintering law engineering Laser power scaling Selective laser melting 0210 nano-technology Near net shape |
| Zdroj: | Rapid Prototyping Journal. 23:329-336 |
| ISSN: | 1355-2546 |
| DOI: | 10.1108/rpj-02-2016-0017 |
| Popis: | Purpose The purpose of this paper is to explore the possibility of producing Cu-based shape memory alloys (SMA) by means of direct metal laser fabrication (DMLF). Design/methodology/approach The fabrication approach consists of the combination of laser melting of a metallic powder with heating treatment in a controlled inert atmosphere. Three prospective Cu-Al-Ni alloy compositions were tested, and the effects of laser power, as well as laser exposure time, were verified. Findings All the processed materials were found to attain microstructures and phase change transformation temperatures typical of this type of SMA. Practical implications Further development of this technique will allow for fabrication of large elements with considerable shape memory effect, which are currently not viable due to high cost of nitinol. Originality/value This work showed a proof of concept toward the development of DMLF-based additive manufacturing of near net shape components of Cu-based SMAs from elemental powders. |
| Databáze: | OpenAIRE |
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