Tensile actuation response of additively manufactured nickel-titanium shape memory alloys
| Autor: | J. Sam, Alaa Elwany, James H. Mabe, Ibrahim Karaman, Brian E. Franco, Ji Ma |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Fusion Materials science Strain (chemistry) Mechanical Engineering Metals and Alloys 02 engineering and technology Shape-memory alloy 021001 nanoscience & nanotechnology Condensed Matter Physics SMA 01 natural sciences Mechanics of Materials Nickel titanium 0103 physical sciences Ultimate tensile strength General Materials Science Composite material Selective laser melting 0210 nano-technology Ductility |
| Zdroj: | Scripta Materialia. 146:164-168 |
| ISSN: | 1359-6462 |
| Popis: | In the present work, we characterize the tensile shape memory actuation behavior of NiTi shape memory alloys (SMAs) fabricated using laser powder bed fusion (L-PBF) additive manufacturing process. The samples were fabricated using two different sets of processing parameters. While reversible tensile shape memory behavior was observed in both cases, the samples fabricated with a shorter hatch spacing exhibited higher transformation temperatures, lower actuation strain, and lower irrecoverable strain compared to the samples fabricated with wider hatch spacing. The actuation strain and ductility of the L-PBF samples were lower than that of the conventionally manufactured NiTi SMA samples. |
| Databáze: | OpenAIRE |
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