Functional properties and shape memory effect of Nitinol manufactured via electron beam powder bed fusion

Fink A, Fu Z, Körner C (2023)


Publication Type: Journal article

Publication year: 2023

Journal

Book Volume: 30

Article Number: 101823

DOI: 10.1016/j.mtla.2023.101823

Abstract

Ti-rich Nitinol (NiTi) is characterized by its functional properties to restore its original shape after deformation due to a temperature-induced reversible martensitic phase transition. In this study, dense Ti-rich Nitinol free of cracks is successfully produced by means of Electron Beam Powder Bed Fusion (PBF-EB). The martensitic phase transition behavior of the as-built NiTi parts and powder is analyzed using Differential Scanning Calorimetry (DSC) analysis. To gain a deep understanding of the DSC results, segregation during solidification is thermodynamically studied (CALPHAD). The PBF-EB-fabricated NiTi shows a microstructure containing fine columnar grains and numerous precipitates, whose influence on the tensile properties at room temperature is discussed. Furthermore, the one-way and two-way shape memory effects of PBE-EB-produced NiTi are investigated using an innovative experimental setup based on thermomechanical training.

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How to cite

APA:

Fink, A., Fu, Z., & Körner, C. (2023). Functional properties and shape memory effect of Nitinol manufactured via electron beam powder bed fusion. Materialia, 30. https://doi.org/10.1016/j.mtla.2023.101823

MLA:

Fink, Alexander, Zongwen Fu, and Carolin Körner. "Functional properties and shape memory effect of Nitinol manufactured via electron beam powder bed fusion." Materialia 30 (2023).

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