Tensile actuation response of additively manufactured nickel-titanium shape memory alloys Academic Article uri icon

abstract

  • © 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.

altmetric score

  • 0.75

author list (cited authors)

  • Sam, J., Franco, B., Ma, J., Karaman, I., Elwany, A., & Mabe, J. H.

citation count

  • 29

publication date

  • March 2018