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Journals / Hittite Journal of Science and Engineering / 2025 / Volume: 12 Issue: 4

Effect of Ti Element on Martensitic Transformations in Fe-Ni-x%Ti Alloys

Ozan Önal(HİTİT ÜNİVERSİTESİ)0009-0001-2613-1944
Osman Armağan(KARAMANOĞLU MEHMETBEY ÜNİVERSİTESİ)0000-0002-7860-0909
Hakan Güngüneş(HİTİT ÜNİVERSİTESİ)0000-0002-5803-3193
Talip Kırındı(KIRIKKALE ÜNİVERSİTESİ)0000-0001-8574-1673
Pages
—
Publication Date
2025-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

We determined morphological change, martensitic transformation start temperature (Ms), austenite phase transformation start temperature (As), and hardness values depending on Ti amount.

📌 3 Key Takeaways

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Objective & Hypothesis:This study investigated the morphological, magnetic, mechanical, and thermal properties of Fe-28.2%Ni-0.5%Ti, Fe-26.8%Ni-1.5%Ti, and Fe-27.6%Ni-4.2%Ti alloys.
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Key Findings & Data:In SEM examinations, a high amount of lath (rod) type martensite formation was observed in Fe-28.2%Ni-0.5%Ti, Fe-26.8%Ni-1.5%Ti alloys.
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Conclusion & Impact:We determined morphological change, martensitic transformation start temperature (Ms), austenite phase transformation start temperature (As), and hardness values depending on Ti amount.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Fe based alloys · Martensitic transformation · Mössbauer Spectroscopy

Abstract

This study investigated the morphological, magnetic, mechanical, and thermal properties of Fe-28.2%Ni-0.5%Ti, Fe-26.8%Ni-1.5%Ti, and Fe-27.6%Ni-4.2%Ti alloys. Scanning Electron Microscope (SEM), Mössbauer Spectrometer, Differential Scanning Calorimetry (DSC), and Vickers hardness were used to determine the physical properties of the alloys. In SEM examinations, a high amount of lath (rod) type martensite formation was observed in Fe-28.2%Ni-0.5%Ti, Fe-26.8%Ni-1.5%Ti alloys. In contrast, in Fe-27.6%Ni-4.2%Ti alloy, lenticular (spindle) type martensite formation with partial twinning was observed in addition to rod (lath) martensites. We determined Mössbauer parameters such as Hyperfine Magnetic Field (Heff), Quadrupole Shift (Q.S), Isomer Shift (I.S), Line Width (W), and percent fraction fields of phases. It has been found that Mössbauer spectra at room temperature are formed by the overlap of two sextet spectra belonging to the ferromagnetic or antiferromagnetic martensite phase and one single spectrum belonging to the paramagnetic austenite phase. We determined morphological change, martensitic transformation start temperature (Ms), austenite phase transformation start temperature (As), and hardness values depending on Ti amount.

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Cite This Article

Önal, O., Armağan, O., Güngüneş, H., Kırındı, T. (2025). Effect of Ti Element on Martensitic Transformations in Fe-Ni-x%Ti Alloys. Hittite Journal of Science and Engineering, Volume: 12 Issue: 4. https://doi.org/10.17350/HJSE19030000364

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