FEF 19004.16.003
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.
Fe based alloys Martensitic transformation Mössbauer Spectroscopy Vickers hardness Differential Scanning Calorimetry Scanning Electron Microscope
Ethical permission is not required for this study.
Hitit University
FEF 19004.16.003
This study was supported by Hitit University Scientific Research Projects Coordination Office with Project number FEF 19004.16.003.
| Primary Language | English |
|---|---|
| Subjects | Physical Metallurgy, Material Characterization, Metals and Alloy Materials |
| Journal Section | Research Article |
| Authors | |
| Project Number | FEF 19004.16.003 |
| Submission Date | March 23, 2025 |
| Acceptance Date | September 11, 2025 |
| Publication Date | December 31, 2025 |
| Published in Issue | Year 2025 Volume: 12 Issue: 4 |
Hittite Journal of Science and Engineering is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY NC).