TY - JOUR
T1 - Superelasticity preservation in dissimilar joint of NiTi shape memory alloy to biomedical PtIr
AU - Shamsolhodaei, A.
AU - Oliveira, João Pedro
AU - Panton, B.
AU - Ballesteros, Belén
AU - Schell, Norbert
AU - Zhou, Y. Norman
N1 - info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00667%2F2020/PT#
The authors would like to acknowledge the support of NSERC (Natural Science and Engineering Research Council) in Canada and Canada Research Chairs (CRC). The authors also wish to thank Canadian center for Electron Microscopy (CCEM) at McMaster University for their support for accessing to EBSD. The CCEM is a National Facility supported by NSERC and McMaster University. This project has received funding from the EU-H2020 Research and Innovation program under Grant agreement No. 654360 having benefitted from the access provided by ICN2 (Spain) within the framework of the NFFA-Europe Transnational Access Activity. ICN2 is funded by the CERCA program/Generalitat de Catalunya and by the Severo Ochoa program of the Spanish Ministry of Economy, Industry and Competitiveness (MINECO, Grant No. SEV-2017-0706). JPO The research leading to this result has been supported by the project CALIPSOplus under the Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020 (proposal I-20160912).
PY - 2021/5
Y1 - 2021/5
N2 - Laser microwelding was used to join, for the first time, superelastic NiTi to biomedical PtIr which can be used in multicomponent biomedical devices. By process optimization, it was possible to control the formation of the B2 NiTiPt phase, with no intermetallic compounds being formed. The NiTiPt phase inside the fusion zone had a strong metallurgical bonding with the NiTi base material due to the smooth transition of its grain orientation towards 〈111〉 B2 NiTi. The major finding of the present work is the preservation of the NiTi superelastic response in the welded joint as evidenced by the load/unloading cycling up to 6% strain, significantly higher than typically required for biomedical applications.
AB - Laser microwelding was used to join, for the first time, superelastic NiTi to biomedical PtIr which can be used in multicomponent biomedical devices. By process optimization, it was possible to control the formation of the B2 NiTiPt phase, with no intermetallic compounds being formed. The NiTiPt phase inside the fusion zone had a strong metallurgical bonding with the NiTi base material due to the smooth transition of its grain orientation towards 〈111〉 B2 NiTi. The major finding of the present work is the preservation of the NiTi superelastic response in the welded joint as evidenced by the load/unloading cycling up to 6% strain, significantly higher than typically required for biomedical applications.
KW - Cyclic stress-strain response
KW - Dissimilar Joining
KW - Electron back scattered diffraction
KW - Laser welding
KW - NiTi shape memory alloys
KW - Synchrotron X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85104053661&partnerID=8YFLogxK
U2 - 10.1016/j.mtla.2021.101090
DO - 10.1016/j.mtla.2021.101090
M3 - Article
AN - SCOPUS:85104053661
SN - 2589-1529
VL - 16
JO - Materialia
JF - Materialia
M1 - 101090
ER -