In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel
In the present study, CrFeCoNiCu(VC)x (x = 0, 1, and 2) high-entropy alloy (HEA) composites were cladded on AISI304 stainless steel using tungsten-inert gas (TIG) cladding. For this purpose, elemental powders of Cr, Co, Fe, Ni, and Cu together with V and C were mechanically mixed, and then by adding...
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Elsevier
2025-03-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425002984 |
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| author | Saeed Hosseini Mahmoud Sarkari Khorrami Mahmoud Heydarzadeh Sohi |
| author_facet | Saeed Hosseini Mahmoud Sarkari Khorrami Mahmoud Heydarzadeh Sohi |
| author_sort | Saeed Hosseini |
| collection | DOAJ |
| description | In the present study, CrFeCoNiCu(VC)x (x = 0, 1, and 2) high-entropy alloy (HEA) composites were cladded on AISI304 stainless steel using tungsten-inert gas (TIG) cladding. For this purpose, elemental powders of Cr, Co, Fe, Ni, and Cu together with V and C were mechanically mixed, and then by adding the proper amount of polyvinyl alcohol as a binder, a uniform paste was prepared. The paste was then preplaced on the substrate and after being dried underwent TIG surface melting under the dilution-controlled condition to form HEA-clad layers with and without vanadium carbide (VC). Microstructural assessments of the layer formed without the addition of V and C revealed the formation of a single-phase solid solution HEA with FCC crystal structure in which the interdendritic segregation of the Cu-rich phase was evident. Upon adding V and C, appreciable microstructural changes occurred. In-situ VC and a solid solution with BCC crystal structure rich in Cr and V were formed along with the FCC phase. The BCC phase was in the form of lamellar eutectic with the FCC one. More interestingly, the morphology of the segregated Cu-rich phase altered from an interdendritic form to an island-like shape. Based on the variety of morphology, VC was formed either as an epitaxial growth or a primary phase from the molten material. By the increment of VC, the eutectic phase changed from lamellar to a divorced form. This was also responsible for the enhanced value of microhardness from 230 HV in the substrate to 570 HV in the CrFeCoNiCu(VC)2 high-entropy clad. |
| format | Article |
| id | doaj-art-0f6ea19bff4947b6bf649a0da4182c34 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-0f6ea19bff4947b6bf649a0da4182c342025-02-12T05:31:16ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013533333340In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steelSaeed Hosseini0Mahmoud Sarkari Khorrami1Mahmoud Heydarzadeh Sohi2School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, IranCorresponding author.; School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, IranSchool of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, IranIn the present study, CrFeCoNiCu(VC)x (x = 0, 1, and 2) high-entropy alloy (HEA) composites were cladded on AISI304 stainless steel using tungsten-inert gas (TIG) cladding. For this purpose, elemental powders of Cr, Co, Fe, Ni, and Cu together with V and C were mechanically mixed, and then by adding the proper amount of polyvinyl alcohol as a binder, a uniform paste was prepared. The paste was then preplaced on the substrate and after being dried underwent TIG surface melting under the dilution-controlled condition to form HEA-clad layers with and without vanadium carbide (VC). Microstructural assessments of the layer formed without the addition of V and C revealed the formation of a single-phase solid solution HEA with FCC crystal structure in which the interdendritic segregation of the Cu-rich phase was evident. Upon adding V and C, appreciable microstructural changes occurred. In-situ VC and a solid solution with BCC crystal structure rich in Cr and V were formed along with the FCC phase. The BCC phase was in the form of lamellar eutectic with the FCC one. More interestingly, the morphology of the segregated Cu-rich phase altered from an interdendritic form to an island-like shape. Based on the variety of morphology, VC was formed either as an epitaxial growth or a primary phase from the molten material. By the increment of VC, the eutectic phase changed from lamellar to a divorced form. This was also responsible for the enhanced value of microhardness from 230 HV in the substrate to 570 HV in the CrFeCoNiCu(VC)2 high-entropy clad.http://www.sciencedirect.com/science/article/pii/S2238785425002984TIG claddingHigh-entropy alloyVanadium carbide (VC)304 stainless steelIn-situ compositeEutectic structure |
| spellingShingle | Saeed Hosseini Mahmoud Sarkari Khorrami Mahmoud Heydarzadeh Sohi In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel Journal of Materials Research and Technology TIG cladding High-entropy alloy Vanadium carbide (VC) 304 stainless steel In-situ composite Eutectic structure |
| title | In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel |
| title_full | In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel |
| title_fullStr | In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel |
| title_full_unstemmed | In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel |
| title_short | In-situ composite formation of vanadium carbide in CrFeCoNiCu high-entropy alloy cladded on AISI304 stainless steel |
| title_sort | in situ composite formation of vanadium carbide in crfeconicu high entropy alloy cladded on aisi304 stainless steel |
| topic | TIG cladding High-entropy alloy Vanadium carbide (VC) 304 stainless steel In-situ composite Eutectic structure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425002984 |
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