Journal
SMART MATERIALS AND STRUCTURES
Volume 25, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/25/3/035005
Keywords
shape memory alloys; additive manufacturing; selective laser melting
Funding
- US State of Ohio Department of Development [WP10-010]
- TVSF grant [TECG2014095]
- NASA EPSCOR program [NNX11AQ31A]
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This study presents the shape memory behavior of as-fabricated and solution annealed Ni50.8Ti49.2 alloys fabricated using the. selective laser melting (SLM) technique. Results were compared to the initial ingot that was used to fabricate powders. Optical microscopy was employed to reveal the microstructure. The shape memory effect under constant compressive stress and isothermal compressive stress cycling tests were. utilized to investigate the shape memory characteristics of the. initial ingot and fabricated alloys. It was. revealed that the. SLM method and post heat treatments can be used to tailor the microstructure and shape memory response. Partial superelasticity was observed after the. SLM process. Solutionizing the fabricated samples increased. the strength and. improved the. superelasticity but slightly decreased. the recoverable strain.
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