Tensile actuation response of additively manufactured nickel-titanium shape memory alloys
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© 2017 Acta Materialia Inc. 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.
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Sam, J., Franco, B., Ma, J., Karaman, I., Elwany, A., & Mabe, J. H
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Sam, J||Franco, B||Ma, J||Karaman, I||Elwany, A||Mabe, JH
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Actuation
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Additive Manufacturing
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NiTi
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Selective Laser Melting
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Shape Memory Alloys
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