Properties of Cutting Tool Composite Material Diamond–(Fe–Ni–Cu–Sn) Reinforced with Nano-VN
Mamalis A. Mechnik V. Morozow D. Ratov B. Kolodnitskyi V. Samociuk W. Bondarenko N.
June 2022MDPI
Machines
2022#10Issue 6
The study is devoted to structure and mechanical properties of a diamond composite used for manufacturing of cutting tools applied in a wide range of technological fields. The sample tools were fabricated by cold-pressing technology followed by hot-pressing in vacuum of the 51Fe–32Cu–9Ni–8Sn matrix mixture with diamond bits, both in absence and presence of nano-VN additives. It was demonstrated that without VN addition, the diamond–matrix interface contained voids and discontinuities. Nanodispersed VN added to the matrix resulted in the formation of a more fine-grained structure consisting of solid solutions composed of iron, copper, nickel, vanadium and tin in different ratios and the formation of a tight diamond–matrix zone with no visible voids, discontinuities and other defects. Optimal concentrations of VN in the CDM matrix were found achieving the maximum values of nanohardness H = 7.8 GPa, elastic modulus E = 213 GPa, resistance to elastic deformation expressed by ratio H/E = 0.0366, plastic deformation resistance H3/E2 = 10.46 MPa, ultimate flexural strength Rbm = 1110 MPa, and compressive strength Rcm = 1410 MPa. As-prepared Fe–Cu–Ni–Sn–VN composites with enhanced physical and mechanical properties are suitable for cutting tools of increased durability and improved performance.
composite , cutting tools , elastic strain to failure , nanodispersed vanadium nitride , resistance to plastic deformation , structure , vacuum hot pressing
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Project Center for Nanotechnology and Advanced Engineering, 9 Finikos Street, Kifissia, Athens, 14564, Greece
V. Bakul Institute for Superhard Materials of the NAS of Ukraine, Kyiv, 04074, Ukraine
Faculty of Mechanical Engineering Kazimierz Pulaski, University of Technology and Humanities in Radom, Stasieckiego 54, Radom, 26-600, Poland
Institute of Geology, Oil and Mining, K. Satpayev Kazakh National Technical University, Almaty, 050013, Kazakhstan
Faculty of Production Engineering, Lublin University of Life Sciences, Gleboka 28, Lublin, 20-612, Poland
Project Center for Nanotechnology and Advanced Engineering
V. Bakul Institute for Superhard Materials of the NAS of Ukraine
Faculty of Mechanical Engineering Kazimierz Pulaski
Institute of Geology
Faculty of Production Engineering
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