Additive manufacturing of NiTiHf high temperature shape memory alloy
| Autor: | Amirhesam Amerinatanzi, Haluk E. Karaca, Glen Bigelow, Narges Shayesteh Moghaddam, Soheil Saedi, Mohammad Elahinia, Othmane Benafan, Guher P. Toker |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metallurgy Metals and Alloys chemistry.chemical_element 02 engineering and technology Shape-memory alloy 021001 nanoscience & nanotechnology Condensed Matter Physics Compression (physics) 01 natural sciences Oxygen chemistry Mechanics of Materials 0103 physical sciences Particle General Materials Science Selective laser melting 0210 nano-technology |
| Zdroj: | Scripta Materialia. 145:90-94 |
| ISSN: | 1359-6462 |
| Popis: | Additive manufacturing of a NiTi-20Hf high temperature shape memory alloy (HTSMA) was investigated. A selective laser melting (SLM) process by Phenix3D Systems was used to develop components from NiTiHf powder (of approximately 25-75 m particle fractions), and the thermomechanical response was compared to the conventionally vacuum induction skull melted counterpart. Transformation temperatures of the SLM material were found to be slightly lower due to the additional oxygen pick up from the gas atomization and melting process. The shape memory response in compression was measured for stresses up to 500 MPa, and transformation strains were found to be very comparable (Up to 1.26 for the as-extruded; up to 1.52 for SLM). |
| Databáze: | OpenAIRE |
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