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. |
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| 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] |
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| Database: | Engineering Source |
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