Laser microwelding as a novel alloying process to fabricate NiTiPtIr high temperature shape memory alloys

A. Shamsolhodaei; H. Torbati-Sarraf; J. P. Oliveira; K. Zhang; T. Oyamada; N. Schell; N. Chawla; P. Peng; Y. N. Zhou

doi:10.1016/j.matchar.2024.113691

Laser microwelding as a novel alloying process to fabricate NiTiPtIr high temperature shape memory alloys

A. Shamsolhodaei, H. Torbati-Sarraf, J. P. Oliveira, K. Zhang, T. Oyamada, N. Schell, N. Chawla, P. Peng, Y. N. Zhou

Research output: Contribution to journal › Article › peer-review

Abstract

High temperature shape memory alloys (HTSMAs) manufacturing requires a complex processing procedure. This work presents the application of microwelding as a simple, but a novel method to process NiTiPtIr HTSMAs. Laser microwelding was applied to fuse a NiTi tube cored with a PtIr wire to fabricate a NiTiPtIr alloy wire. X-ray microtomography was used to develop the process and confirm the formation of a uniform NiTiPt phase in the wire volume. After heat treatment, the processed NiTiPt material showed considerable superelasticity at 250 °C with just 0.7% residual strain for a maximum imposed strain of 4%. TEM observations revealed the presence of B19 and a smaller fraction of B19’ martensitic structures in the matrix due to minor changes in the Pt concentration. This laser microwelding enabled selective alloying for the fabrication of NiTiPtIr which opens the door toward a more straightforward production method for ternary NiTi-based HTSMAs.

Original language	English
Article number	113691
Number of pages	10
Journal	Materials Characterization
Volume	209
DOIs	https://doi.org/10.1016/j.matchar.2024.113691
Publication status	Published - Mar 2024

Keywords

Laser processing
NiTiPt shape memory alloys
Transmission Electron microscopy
X-ray microtomography

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10.1016/j.matchar.2024.113691

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@article{e52e36754d7542bb9d11017b065f279c,

title = "Laser microwelding as a novel alloying process to fabricate NiTiPtIr high temperature shape memory alloys",

abstract = "High temperature shape memory alloys (HTSMAs) manufacturing requires a complex processing procedure. This work presents the application of microwelding as a simple, but a novel method to process NiTiPtIr HTSMAs. Laser microwelding was applied to fuse a NiTi tube cored with a PtIr wire to fabricate a NiTiPtIr alloy wire. X-ray microtomography was used to develop the process and confirm the formation of a uniform NiTiPt phase in the wire volume. After heat treatment, the processed NiTiPt material showed considerable superelasticity at 250 °C with just 0.7% residual strain for a maximum imposed strain of 4%. TEM observations revealed the presence of B19 and a smaller fraction of B19{\textquoteright} martensitic structures in the matrix due to minor changes in the Pt concentration. This laser microwelding enabled selective alloying for the fabrication of NiTiPtIr which opens the door toward a more straightforward production method for ternary NiTi-based HTSMAs.",

keywords = "Laser processing, NiTiPt shape memory alloys, Transmission Electron microscopy, X-ray microtomography",

author = "A. Shamsolhodaei and H. Torbati-Sarraf and Oliveira, {J. P.} and K. Zhang and T. Oyamada and N. Schell and N. Chawla and P. Peng and Zhou, {Y. N.}",

note = "Funding Information: 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 Travis Casagrande, Carmen Andrei and Xiang Wang in the Canadian Centre for Electron Microscopy (CCEM) at McMaster University for their technical support with the FIB and TEM . The CCEM is a National Facility supported by NSERC and McMaster University . JPO acknowledges funding by national funds from FCT - Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia , I.P., in the scope of the projects LA/P/0037/2020 , UIDP/50025/2020 and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures , Nanomodelling and Nanofabrication – i3N . Publisher Copyright: {\textcopyright} 2024 Elsevier Inc.",

year = "2024",

month = mar,

doi = "10.1016/j.matchar.2024.113691",

language = "English",

volume = "209",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier Science B.V., Amsterdam.",

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TY - JOUR

T1 - Laser microwelding as a novel alloying process to fabricate NiTiPtIr high temperature shape memory alloys

AU - Shamsolhodaei, A.

AU - Torbati-Sarraf, H.

AU - Oliveira, J. P.

AU - Zhang, K.

AU - Oyamada, T.

AU - Schell, N.

AU - Chawla, N.

AU - Peng, P.

AU - Zhou, Y. N.

N1 - Funding Information: 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 Travis Casagrande, Carmen Andrei and Xiang Wang in the Canadian Centre for Electron Microscopy (CCEM) at McMaster University for their technical support with the FIB and TEM . The CCEM is a National Facility supported by NSERC and McMaster University . JPO acknowledges funding by national funds from FCT - Fundação para a Ciência e a Tecnologia , I.P., in the scope of the projects LA/P/0037/2020 , UIDP/50025/2020 and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures , Nanomodelling and Nanofabrication – i3N . Publisher Copyright: © 2024 Elsevier Inc.

PY - 2024/3

Y1 - 2024/3

N2 - High temperature shape memory alloys (HTSMAs) manufacturing requires a complex processing procedure. This work presents the application of microwelding as a simple, but a novel method to process NiTiPtIr HTSMAs. Laser microwelding was applied to fuse a NiTi tube cored with a PtIr wire to fabricate a NiTiPtIr alloy wire. X-ray microtomography was used to develop the process and confirm the formation of a uniform NiTiPt phase in the wire volume. After heat treatment, the processed NiTiPt material showed considerable superelasticity at 250 °C with just 0.7% residual strain for a maximum imposed strain of 4%. TEM observations revealed the presence of B19 and a smaller fraction of B19’ martensitic structures in the matrix due to minor changes in the Pt concentration. This laser microwelding enabled selective alloying for the fabrication of NiTiPtIr which opens the door toward a more straightforward production method for ternary NiTi-based HTSMAs.

AB - High temperature shape memory alloys (HTSMAs) manufacturing requires a complex processing procedure. This work presents the application of microwelding as a simple, but a novel method to process NiTiPtIr HTSMAs. Laser microwelding was applied to fuse a NiTi tube cored with a PtIr wire to fabricate a NiTiPtIr alloy wire. X-ray microtomography was used to develop the process and confirm the formation of a uniform NiTiPt phase in the wire volume. After heat treatment, the processed NiTiPt material showed considerable superelasticity at 250 °C with just 0.7% residual strain for a maximum imposed strain of 4%. TEM observations revealed the presence of B19 and a smaller fraction of B19’ martensitic structures in the matrix due to minor changes in the Pt concentration. This laser microwelding enabled selective alloying for the fabrication of NiTiPtIr which opens the door toward a more straightforward production method for ternary NiTi-based HTSMAs.

KW - Laser processing

KW - NiTiPt shape memory alloys

KW - Transmission Electron microscopy

KW - X-ray microtomography

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U2 - 10.1016/j.matchar.2024.113691

DO - 10.1016/j.matchar.2024.113691

M3 - Article

AN - SCOPUS:85183454596

SN - 1044-5803

VL - 209

JO - Materials Characterization

JF - Materials Characterization

M1 - 113691

ER -

Laser microwelding as a novel alloying process to fabricate NiTiPtIr high temperature shape memory alloys

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Keywords

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