Effects of Deposition Current on the Microstructure and Pseudoelasticity of Wire-Arc Additively Manufactured Ni-rich NiTi Alloys

Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1216)


The evolution of microstructure, phase transformation, nanohardness, and pseudoelasticity of a Ni-rich NiTi alloy in-situ processed by wire arc additive manufacturing (WAAM) with different deposition current was assessed. As the deposition current increased, the size of the B2 grains and Ni4Ti3 precipitates coarsened and the characteristic phase transformation temperatures increased. Furthermore, by increasing the deposition current, the nanohardness decreased while the pseudoelastic recovery of the matrix improved to some extent. These findings can be used to further optimize the process of fabricating NiTi alloys by WAAM with acceptable microstructure and mechanical response.


Deposition current Microstructure Pseudoelasticity Wire arc additive manufacturing Ni-rich NiTi alloys 



This work was financially supported by the China Scholarship Council (CSC) (201606080014), the University of Wollongong (UOW), and the UOW Electron Microscopy Centre (EMC).


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© The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.School of Mechanical, Materials, Mechatronic and Biomedical EngineeringUniversity of WollongongWollongongAustralia

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