Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers
Nickel-titanium shape memory alloy (NiTi SMA) is the most used of all shape memory materials. They are often posed with the threat of poor machinability and in-process fatigue during real-time engineering applications. In this study, pre-optimised compositions of NiTi and α, β, and γ stabilizers wer...
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025025095 |
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| author | Ojo Philip Bodunde Shiming Gao Shuo Qu Junhao Ding Xu Song Wei-Hsin Liao |
| author_facet | Ojo Philip Bodunde Shiming Gao Shuo Qu Junhao Ding Xu Song Wei-Hsin Liao |
| author_sort | Ojo Philip Bodunde |
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| description | Nickel-titanium shape memory alloy (NiTi SMA) is the most used of all shape memory materials. They are often posed with the threat of poor machinability and in-process fatigue during real-time engineering applications. In this study, pre-optimised compositions of NiTi and α, β, and γ stabilizers were used to fabricate simple geometries of NiTi-α, NiTi-β, and NiTi-γ for fatigue testing. The shape memory property of the hybrid form of NiTi SMAs were modelled and simulated to observe possible deviation from the bare NiTi SMA. Modelling and numerical simulations were also performed to simulate the numbers of cycles to fatigue failure and the corresponding damage due to slip. The numerical fatigue behaviour of the hybrid NiTi SMA was simulated using two control strategies i.e. stress and strain control strategies. Simulations and empirical estimations were experimentally validated via differential scanning calorimetry (DSC) for shape memory behaviour, and mechanical testing on the MTS for cyclic fatigue behaviours. The follow-up experiments made NiTiCuo, the most suitable hybrid and the best control strategies for fatigue evaluation is the strain. And the numbers of cycle to fatigue failure ranges between 3500 and 4000 for NiTi-α; 1500 and 2000 for NiTi-β; and like bare NiTi, 1000 and 1500 for NiTi-γ. Details of microstructure were given and its information could be helpful for those who require hybridized NiTi alloys for various applications. |
| format | Article |
| id | doaj-art-5fe1491d4d38442f9a7a05ea988cd8f0 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
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| spelling | doaj-art-5fe1491d4d38442f9a7a05ea988cd8f02025-08-20T03:58:36ZengElsevierResults in Engineering2590-12302025-09-012710644010.1016/j.rineng.2025.106440Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizersOjo Philip Bodunde0Shiming Gao1Shuo Qu2Junhao Ding3Xu Song4Wei-Hsin Liao5Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, ChinaDepartment of Mechanical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou, ChinaDepartment of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, ChinaDepartment of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, ChinaDepartment of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, ChinaDepartment of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China; Institute of Intelligent Design and Manufacturing, The Chinese University of Hong Kong, Shatin, Hong Kong, China; Corresponding author at: Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China.Nickel-titanium shape memory alloy (NiTi SMA) is the most used of all shape memory materials. They are often posed with the threat of poor machinability and in-process fatigue during real-time engineering applications. In this study, pre-optimised compositions of NiTi and α, β, and γ stabilizers were used to fabricate simple geometries of NiTi-α, NiTi-β, and NiTi-γ for fatigue testing. The shape memory property of the hybrid form of NiTi SMAs were modelled and simulated to observe possible deviation from the bare NiTi SMA. Modelling and numerical simulations were also performed to simulate the numbers of cycles to fatigue failure and the corresponding damage due to slip. The numerical fatigue behaviour of the hybrid NiTi SMA was simulated using two control strategies i.e. stress and strain control strategies. Simulations and empirical estimations were experimentally validated via differential scanning calorimetry (DSC) for shape memory behaviour, and mechanical testing on the MTS for cyclic fatigue behaviours. The follow-up experiments made NiTiCuo, the most suitable hybrid and the best control strategies for fatigue evaluation is the strain. And the numbers of cycle to fatigue failure ranges between 3500 and 4000 for NiTi-α; 1500 and 2000 for NiTi-β; and like bare NiTi, 1000 and 1500 for NiTi-γ. Details of microstructure were given and its information could be helpful for those who require hybridized NiTi alloys for various applications.http://www.sciencedirect.com/science/article/pii/S2590123025025095NiTi SMAα-, β-, γ- hybrid stabilizersNiTi functional fatigueStress/strain-controlled strategyMicrostructural evolution |
| spellingShingle | Ojo Philip Bodunde Shiming Gao Shuo Qu Junhao Ding Xu Song Wei-Hsin Liao Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers Results in Engineering NiTi SMA α-, β-, γ- hybrid stabilizers NiTi functional fatigue Stress/strain-controlled strategy Microstructural evolution |
| title | Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers |
| title_full | Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers |
| title_fullStr | Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers |
| title_full_unstemmed | Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers |
| title_short | Mitigating functional fatigue of 3D-printed nickel-titanium shape memory alloy using hybridizing stabilizers |
| title_sort | mitigating functional fatigue of 3d printed nickel titanium shape memory alloy using hybridizing stabilizers |
| topic | NiTi SMA α-, β-, γ- hybrid stabilizers NiTi functional fatigue Stress/strain-controlled strategy Microstructural evolution |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025025095 |
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