@article{6c384bcfb5ec4716b752592ac8603e66,
title = "Wire and arc additive manufacturing of a Ni-rich NiTi shape memory alloy: Microstructure and mechanical properties",
abstract = "Wire and Arc Additive Manufacturing (WAAM) was used for fabrication of NiTi parts using a commercialy available Ni-rich NiTi wire as the feedstock material. The as-built parts are near fully austenitic at room temperature as confirmed by differential scanning calorimetry, X-ray diffraction and superelastic cycling. The as-built microstructure changed from collumnar, in the first deposited layers, to equiaxed in the last deposited ones as a result of the different thermal cycle conditions. This is the first work where WAAM NiTi parts exhibit superelastic behavior under tensile conditions, highlighting the potential use of the technique for the creation of parts shaped in a complex manner based on this material and process. The potential to use WAAM for deposition of advanced functional materials is demonstrated.",
keywords = "Digital image correlation, Microstructure, NiTi shape memory alloy, Phase transformation, Wire and arc additive manufacturing",
author = "Z. Zeng and Cong, {B. Q.} and Oliveira, {J. P.} and Ke, {W. C.} and N. Schell and B. Peng and Qi, {Z. W.} and Ge, {F. G.} and W. Zhang and Ao, {S. S.}",
note = "This work was supported by Natural Science Foundation of China (No. 51775091, 51405335, 51575383 & 51675031), Science and technology project of Sichuan Province (No. 2018GZ0284), the Natural Science Foundation of Tianjin info:eu-repo/grantAgreement/EC/H2020/730872/EU# City (No. 18JCQNJC04100), the National Natural Science Foundation of China and Civil Aviation Administration of China (No. U1933129), and the Beijing Municipal Natural Science Foundation (No. 3182020) and the Fundamental Research Funds for the Central Universities (No. YWF-18-BJJ- 244 & YWF-19-BJ-J-232). JPO acknowledges Fundacao para a Ciencia e Tecnologia (FCT) for its financial support through the project UID/EMS/00667/2019 (UNIDEMI). The authors acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III. ",
year = "2020",
month = mar,
day = "1",
doi = "10.1016/j.addma.2020.101051",
language = "English",
volume = "32",
journal = "Additive Manufacturing",
issn = "2214-8604",
publisher = "Elsevier",
}