ArticleScientific reports2026
Laser powder bed fusion of NiTi: effect of laser power and scanning speed on phase transformation temperatures.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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2 authors.
Funding
Abstract
Despite the growing use of powder bed fusion laser beam in metals (PBF-LB/M) to fabricate NiTi shape memory alloys, the interplay between process parameters and functional performance remains poorly understood, hindered by small-scale studies that fail to capture parametric complexity. This work presents a comprehensive analysis of over 200 NiTi samples, systematically varying laser power and scanning speed to uncover their effects on phase transformation behaviour. It is demonstrated that energy density, a widely assumed predictor, inadequately explains transformation temperatures, which instead exhibit a nonlinear dependence on both laser power and scanning speed, yet align linearly with scanning speed at fixed power. These findings challenge conventional assumptions and provide a robust framework for tuning PBF-LB/M parameters to achieve consistent, application-ready NiTi components, advancing the reliability of shape memory alloys in critical engineering and biomedical applications.
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