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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Shamsolhodaei, A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Revealing microstructural evolution and mechanical properties of resistance spot welded NiTi-stainless steel with Ni or Nb interlayercitations
- 2024Laser microwelding as a novel alloying process to fabricate NiTiPtIr high temperature shape memory alloys
- 2022Wire and arc additive manufacturing of 316L stainless steel/Inconel 625 functionally graded material ; Development and characterizationcitations
- 2022Wire and arc additive manufacturing of 316L stainless steel/Inconel 625 functionally graded material: development and characterizationcitations
- 2022Wire and arc additive manufacturing of 316L stainless steel/Inconel 625 functionally graded material: development and characterizationcitations
- 2022Wire and arc additive manufacturing of 316L stainless steel/Inconel 625 functionally graded materialcitations
- 2021Superelasticity preservation in dissimilar joint of NiTi shape memory alloy to biomedical PtIrcitations
- 2020Controlling intermetallic compounds formation during laser welding of NiTi to 316L stainless steelcitations
- 2017Room temperature superelastic responses of NiTi alloy treated by two distinct thermomechanical processing schemescitations
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article
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’ 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.