Effects of Annealing on Microstructure and Properties of FeCrNiCoMn High-Entropy Alloy Coating Prepared by Laser Cladding

Effects of Annealing on the Microstructure and Wear Resistance of AlCoCrFeNiTi 0.5 High-entropy Alloy Coating Prepared by Laser Cladding

“…Firstly, complex phase Al 80 Cr 13 Co 7 and AlFe solid solution with bcc structure form in the annealed alloy, which can enhance hardness by increasing lattice distortion and preventing slippage. Similar results were given by Ziqing Weng et al [18] . Secondly, fine and uniform spinodal decomposition microstructures lead to much higher hardness in as-annealed coatings.…”

“…The elasticity modulus of Al and Fe are different in spinodal decomposition microstructures, the whole system forms nonuniform elasticity modulus and AlFe will separate out in anisotropic state. Similar results were reported by Ziqing Weng et al [18] in their study on annealed FeCrNiCoMn high-entropy alloy coating prepared by laser cladding. Fig.3 shows the hardness of as-cast and as-annealed AlCoCrFeNiTi 0.5 coating.…”

Thermodynamic assessment and experimental investigation of the systems Al–Fe–Mn and Al–Fe–Mn–Ni

“…The average microhardness was 540HV 0.2 . The microstructure of the coating increased slightly upon annealing at 550, 700 or 900C 401 . The coating contained relatively more BCC phase when annealed at 900C.…”

Effects of process parameters and annealing on microstructure and properties of CoCrFeMnNi high-entropy alloy coating prepared by plasma cladding

“…It is observed that the contents of the main elements in the coating matrix show no evident changes between the cladded and the annealed coatings, but clear difference is observed for the aggregations. The contents of main elements in aggregations of annealed coating are lower than that of the cladded coating, maybe due to that during the annealing process, the diffusion activation energy of atoms increases, and the solid solution of carbides or oxides dispersion can also contribute to the decrease in aggregation [26][27] . Figure 10 shows the grain boundaries and the distribution of the misorientation of the HEA coatings that cladded and annealed at 850 °C.…”

“…8. The aggregations are more concentrated in the cladded coatings than in the annealed coatings, indicating that some aggregations are dissolved or decomposed with the diffusion or replacement of the elements during the annealing process [26] . The aggregations (Points A and C in Fig.…”