What question did this study set out to answer?

This research aims to explore how laser powder bed fusion process parameters affect the properties of nitinol metamaterials.

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

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Investigates the properties of nitinol for morphing actuators, highlighting key processing parameters.

This research aims to explore how laser powder bed fusion process parameters affect the properties of nitinol metamaterials.
Used a range of laser powers from 40 to 400 W and scanning speeds from 175 to 3000 mm/s.
Assessed morphologies in terms of porosity, dimensional accuracy, crystallography, and phase transformation.
Conducted cyclic compression tests to evaluate mechanical properties under varying loads.
Low energy densities (41-55 J/mm³) resulted in less than 0.1% internal porosity, though brittle cracking was noted.
Achieved a maximum recoverable strain of 53.4% at 800 MPa, decreasing to 35.1% at 1200 MPa.
Demonstrated quasilinear pseudoelasticity with low hysteresis over cyclic loading up to 50 cycles.

Červinek et al. (2026) studied this question.

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