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Microstructural investigation and machining performance of NbC-Ti(C0.5N0.5) matrix cermets

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Abstract
In this study, Ni or Co + Ni bonded NbC matrix cermets with secondary carbides (Mo2C and WC) as well as Ti(C0.5N0.5) were prepared by liquid phase sintering at 1450 degrees C in vacuum. Detailed microstructural investigation was performed by SEM, EPMA and XRD analysis. The microstructure, mechanical properties as well as the C45 (HB140) steel turning performance of the cermets were investigated, and compared with a commercial Ti(C0.5N0.5) based cutting insert. The sintering results indicated that the partial substitution of NbC by Ti(C0.5N0.5) had a significant effect on the core-rim microstructure and refinement of NbC solution grains, as well as improved mechanical properties of the NbC-Ti(C0.5N0.5) cermets. The phase constitution and composition of the cermets were supported by thermodynamic equilibrium calculations. All sintered cermets were composed of a fcc solid solution metal binder and a cubic core-rim NbC based solution phase, as well as an independent N-rich Ti(C,N) phase. The NbC-Ti(C0.5N0.5) and Ti(C0.5N0.5) matrix cermets had a comparable HV30 of 1500-1600 kg/mm(2) and a similar fracture toughness of 8.0 MPa m(1/2).
Keywords
Metals and Alloys, MECHANICAL-PROPERTIES, WEAR, WC, CARBIDES, DISSOLUTION, TI(C, N), VC, Cermet, Niobium carbide, Carbonitride, Sintering, Machining performance

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MLA
Huang, S. G., et al. “Microstructural Investigation and Machining Performance of NbC-Ti(C0.5N0.5) Matrix Cermets.” INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, vol. 84, 2019.
APA
Huang, S. G., Nie, H. B., Guo, X. Y., Vleugels, J., Huang, J. H., Mohrbacher, H., … Woydt, M. (2019). Microstructural investigation and machining performance of NbC-Ti(C0.5N0.5) matrix cermets. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 84.
Chicago author-date
Huang, S.G., H.B. Nie, X.Y. Guo, J. Vleugels, J.H. Huang, H. Mohrbacher, Naveenkumar Rajendhran, et al. 2019. “Microstructural Investigation and Machining Performance of NbC-Ti(C0.5N0.5) Matrix Cermets.” INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 84.
Chicago author-date (all authors)
Huang, S.G., H.B. Nie, X.Y. Guo, J. Vleugels, J.H. Huang, H. Mohrbacher, Naveenkumar Rajendhran, Jacob Sukumaran, Patrick De Baets, E. Cannizza, and M. Woydt. 2019. “Microstructural Investigation and Machining Performance of NbC-Ti(C0.5N0.5) Matrix Cermets.” INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 84.
Vancouver
1.
Huang SG, Nie HB, Guo XY, Vleugels J, Huang JH, Mohrbacher H, et al. Microstructural investigation and machining performance of NbC-Ti(C0.5N0.5) matrix cermets. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS. 2019;84.
IEEE
[1]
S. G. Huang et al., “Microstructural investigation and machining performance of NbC-Ti(C0.5N0.5) matrix cermets,” INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, vol. 84, 2019.
@article{8639780,
  abstract     = {In this study, Ni or Co + Ni bonded NbC matrix cermets with secondary carbides (Mo2C and WC) as well as Ti(C0.5N0.5) were prepared by liquid phase sintering at 1450 degrees C in vacuum. Detailed microstructural investigation was performed by SEM, EPMA and XRD analysis. The microstructure, mechanical properties as well as the C45 (HB140) steel turning performance of the cermets were investigated, and compared with a commercial Ti(C0.5N0.5) based cutting insert. The sintering results indicated that the partial substitution of NbC by Ti(C0.5N0.5) had a significant effect on the core-rim microstructure and refinement of NbC solution grains, as well as improved mechanical properties of the NbC-Ti(C0.5N0.5) cermets. The phase constitution and composition of the cermets were supported by thermodynamic equilibrium calculations. All sintered cermets were composed of a fcc solid solution metal binder and a cubic core-rim NbC based solution phase, as well as an independent N-rich Ti(C,N) phase. The NbC-Ti(C0.5N0.5) and Ti(C0.5N0.5) matrix cermets had a comparable HV30 of 1500-1600 kg/mm(2) and a similar fracture toughness of 8.0 MPa m(1/2).},
  articleno    = {105038},
  author       = {Huang, S.G. and Nie, H.B. and Guo, X.Y. and Vleugels, J. and Huang, J.H. and Mohrbacher, H. and Rajendhran, Naveenkumar and Sukumaran, Jacob and De Baets, Patrick and Cannizza, E. and Woydt, M.},
  issn         = {0263-4368},
  journal      = {INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS},
  keywords     = {Metals and Alloys,MECHANICAL-PROPERTIES,WEAR,WC,CARBIDES,DISSOLUTION,TI(C,N),VC,Cermet,Niobium carbide,Carbonitride,Sintering,Machining performance},
  language     = {eng},
  pages        = {8},
  title        = {Microstructural investigation and machining performance of NbC-Ti(C0.5N0.5) matrix cermets},
  url          = {http://dx.doi.org/10.1016/j.ijrmhm.2019.105038},
  volume       = {84},
  year         = {2019},
}

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