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COMPARATIVE ANALYSIS OF MICROSTRAIN AND DISLOCATION IN CoCrFeMnNi AND CoCrFeMnNiTi HIGH ENTROPY ALLOYS.

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Title: COMPARATIVE ANALYSIS OF MICROSTRAIN AND DISLOCATION IN CoCrFeMnNi AND CoCrFeMnNiTi HIGH ENTROPY ALLOYS.
Authors: SANGAR, A. S.1,2, NADZRI, N. I. M.1,2 izzatinadzri@unimap.edu.my, NAZERI, M. F. M.2, PUTTHISIGAMANY, Y.3, CHE HALIN, D. S.1,2, JOSEPH, S.4, JEŻ, K.5
Source: Archives of Metallurgy & Materials. 2025, Vol. 70 Issue 4, p1791-1795. 5p.
Subjects: Dislocation density, High-entropy alloys, X-ray diffraction, Strains & stresses (Mechanics), Microstructure, Titanium
Abstract: Microstrain and dislocation density are critical determinants affecting crystalline materials’ mechanical and physical properties. This investigation assesses the changes present in CoCrFeMnNi and CoCrFeMnNiTi high-entropy alloys (HEAs) through the application of X-ray diffraction (XRD) and the Williamson-Hall method for microstrain and dislocation density. Field Emission Scanning Electron Microscope (FESEM)is used for microstructure analysis. It is observed that the transition from the face-centered cubic (FCC) to body-centered cubic (BCC) phase from CoCrFeMnNi to CoCrFeMnNiTi HEA results in a significant shift of the peak towards a lower 2θ angle by 0.62°. A 30% reduction in microstrain and a 17.49% decrease in dislocation density were noted with the addition of titanium (Ti), which correlated to an increase in hardness measurement of 952 ± 5 HV in CoCrFeMnNiTi. The results indicate the role of Ti in defect dynamics, which is crucial for optimizing material properties. [ABSTRACT FROM AUTHOR]
Copyright of Archives of Metallurgy & Materials is the property of Polish Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Archives+of+Metallurgy+%26+Materials%22">Archives of Metallurgy & Materials</searchLink>. 2025, Vol. 70 Issue 4, p1791-1795. 5p.
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  Data: Microstrain and dislocation density are critical determinants affecting crystalline materials’ mechanical and physical properties. This investigation assesses the changes present in CoCrFeMnNi and CoCrFeMnNiTi high-entropy alloys (HEAs) through the application of X-ray diffraction (XRD) and the Williamson-Hall method for microstrain and dislocation density. Field Emission Scanning Electron Microscope (FESEM)is used for microstructure analysis. It is observed that the transition from the face-centered cubic (FCC) to body-centered cubic (BCC) phase from CoCrFeMnNi to CoCrFeMnNiTi HEA results in a significant shift of the peak towards a lower 2θ angle by 0.62°. A 30% reduction in microstrain and a 17.49% decrease in dislocation density were noted with the addition of titanium (Ti), which correlated to an increase in hardness measurement of 952 ± 5 HV in CoCrFeMnNiTi. The results indicate the role of Ti in defect dynamics, which is crucial for optimizing material properties. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Archives of Metallurgy & Materials is the property of Polish Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: X-ray diffraction
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      – SubjectFull: Strains & stresses (Mechanics)
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      – TitleFull: COMPARATIVE ANALYSIS OF MICROSTRAIN AND DISLOCATION IN CoCrFeMnNi AND CoCrFeMnNiTi HIGH ENTROPY ALLOYS.
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              Text: 2025
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