Founding Research Journal

Founding Research Journal

Investigating the Microstructure and Phase Analysis of High Entropy alloy CoCuFeMnNi Made by Vacuum Induction Furnace

Document Type : Original Research Article

Authors
1 MSc, Faculty of Engineering and Materials Science, Khajeh Nasiruddin Toosi University of Technology, Tehran, Iran
2 Associate Professor, Department of Materials Engineering, K. N. Toosi University of Technology, Tehran, Iran
10.22034/frj.2024.458524.1195
Abstract
In this research, high entropy alloy CoCuFeMnNi was prepared using VIM furnace. Next, in order to identify the transformation temperatures of this high entropy alloy, DSC thermal analysis was taken from it, and the results obtained from this analysis indicated heat change at temperatures of 566, 891 and 1064 oC. To study thermal changes based on microstructure, samples of high entropy alloy CoCuFeMnNi were heated at temperatures determined from DSC analysis and then quenched in water. The aim of this operation was to stabilize the microstructure during heat treatment. Then the quenched samples were analyzed by XRD analysis. The results of phase analysis revealed that the samples heat-treated at 566 oC contain a new phase that precipitated and started to dissolve in the original phase as the temperature increased to 1064 oC. In this regard, the samples were subjected to metallography and microstructure analysis and elemental evaluation using optical microscope and SEM, respectively. The obtained OM and SEM images and results indicated that with the increase in heat treatment temperature, the Diffusion of copper from the dendritic phases (copper-rich phase) to the base increased and as a result, the fraction of dendritic phases decreased, which is more evident at the temperature of 1064 oC.
Keywords
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[1]  George E.P., Raabe D., Ritchie R.O., High-entropy alloys, Nature Reviews Materials, 2019, 4, 515-534.
[2]  Zhang W., Liaw P. K., Zhang Y., Science and technology in high-entropy alloys, Sci. China Mater, 2018, 61, 2-22.
[3]  ناصرزشگی ح.، کیانی رشید ع. ر.،  وحدتی خاکی ج.، طراحی آلیاژهای دیرگداز آنتروپی بالا با هدف کاهش وزن و هزینه، پژوهشنامه ریخته‌گری، 2020، 4، 167-173.
[4]  Huang X., Miao J., Li S., Taylor C.D., Luo A.A., Co-free CuFeMnNi high-entropy alloy with tunable tensile properties by thermomechanical processing, Journal of Materials Science, 2021, 56, 7670-7680.
[5]  Zhao R.F, Ren B., Zhang G.P., Liu Z.X., Cai B., Zhang J.J, CoCrxCuFeMnNi high-entropy alloy powders with superior soft magnetic properties, Journal of Magnetism and Magnetic Materials, 2019,  491, 165574.
[6]  Shen M., He Y., Jia N., Xue W., Li J., Enhanced mechanical properties of C-doped CuFeMnNi high entropy alloy by modulating phase decomposition, Intermetallics,2024, 164, 108125.
[7]  Geanta V., Voiculescu I., Characterization and testing of high-entropy alloys from AlCrFeCoNi system for military applications, in Engineering Steels and High Entropy-Alloys, ed: IntechOpen, 2019.
[8]  Neelima P., Murthy S.N., Chakravarthy P., Srivatsan T., High entropy alloys: challenges in commercialization and the road ahead, in High Entropy Alloys, ed: CRC Press, 2020, 473-546.
[9]  Chen C., Fan Y., Wang W., et al., Synthesis of ultrafine dual-phase structure in CrFeCoNiAl0. 6 high entropy alloy via solid-state phase transformation during sub-rapid solidification, Journal of Materials Science & Technology, 2022, 113, 253-260.
[10] Wang W., Kong Z., Phase separation and microhardness of rapidly solidified high-entropy CoCrFeNiCux alloys, Journal of Alloys and Compounds, 2021, 853, 56451.
[11] جعفری رامیانی ا.، یوسفی د.، مهاجری م.، مدل استاندارد غیرخطی برای بهینه‌سازی مواد بار کوره‌های ذوب بوته‌ای و القایی، پژوهشنامه ریخته‌گری، 2021، 5، 107-118.
[12] Bloxham J.C., Hogge J., Giles N.F., Knotts T. A., Wilding W.V., Modulated Differential scanning calorimetry measurements of 27 compounds, Journal of Chemical & Engineering Data, 2021, 66, 2773-2782.
[13] Karimi M., Shamanian M., Enayati M., Adamzadeh M., Imani M., Fabrication of a novel magnetic high entropy alloy with desirable mechanical properties by mechanical alloying and spark plasma sintering, Journal of Manufacturing Processes, 2022, 84, 859-870.
[14] Shim S.H., Oh S.M., Lee J., Hong S.K., Hong S.I., Nanoscale modulated structures by balanced distribution of atoms and mechanical/structural stabilities in CoCuFeMnNi high entropy alloys, Materials Science and Engineering: A, 2019, 762, 138120.
[15] MacDonald B.E., Fu Z., Wang X, Li Z., Chen W., Zhou Y., et al., Influence of phase decomposition on mechanical behavior of an equiatomic CoCuFeMnNi high entropy alloy, Acta Materialia, 2019, 181, 25-35.
[16] Gao X., Pan X., Long X., Yi Z., Room-temperature synthesis FeNiCo layered double hydroxide as an excellent electrochemical water oxidation catalyst, Journal of the Electrochemical Society, 2017, 164, H755.
[17] Sonkusare R., Janani P.D., Gurao N., Sarkar S., Sen S., Pradeep K., et al., Phase equilibria in equiatomic CoCuFeMnNi high entropy alloy, Materials Chemistry and Physics, 2018, 210, 269-278.
[18] Agarwal R., Sonkusare R., Jha S.R., Gurao N., Biswas K., Nayan N., Understanding the deformation behavior of CoCuFeMnNi high entropy alloy by investigating mechanical properties of binary ternary and quaternary alloy subsets, Materials & Design, 2018, 157, 539-550.
[19] Fiocchi J., Mostaed Coduri A.M., Tuissi A., Casati R., Enhanced cryogenic and ambient temperature mechanical properties of CoCuFeMnNi high entropy alloy through controlled heat treatment, Journal of Alloys and Compounds, 2022, 910, 164810,.
[20] Shao Y., Guo P., Liang N., Cheng S., Wang J., Xu F., Microstructure refinement and enhanced mechanical properties in rapid-quenched MnCrFeCoNi high-entropy alloy, Heliyon, 2023, 9 (11) e22530.
[21] Shim S.H., Lee D.H, Lee B. J., Choi I.-C, Kim Y.-K, Lim K.R., et al., Synergetic strengthening through ultrafine-grained anisotropic microstructure and nanoscale heterogeneity in CoCuFeMnNi high entropy alloy wires, Materials Science and Engineering: A, 2024, 889, 145829.
[22] Fiocchi J., Casati R., Tuissi A., Biffi C.A., Laser beam welding of CoCuFeMnNi high entropy alloy: processing, microstructure, and mechanical properties, Advanced Engineering Materials, 2022, 24, 2200523.
[23] Fiocchi J., Mostaed A., Coduri M., Tuissi A., Casati R., Development and characterization of a novel high entropy alloy strengthened through concurrent spinodal decomposition and precipitation, Journal of Alloys and Compounds, 2023, 947, 169706.
[24] Bahadur F., Kumar J., Gururaj K., Yadav M.K., Tan S., Pradeep K., et al., Room temperature cyclic creep behaviour of equimolar CoCuFeMnNi high entropy alloy, Materials Science and Engineering: A, 2023, 865, 144587.
Volume 8, Issue 2 - Serial Number 25
Autumn and Winter
Autumn 2024
Pages 117-124

  • Receive Date 21 May 2024
  • Revise Date 06 August 2024
  • Accept Date 25 August 2024