The B4C inclusion in Fe-Cu-Ni-Sn-WC for a composites creation applied in ornamental rock cutting tool: a mechanical characterization

Abstract

In the present work, the experiments carried out aimed at the study and development of a composite based on Fe-Cu-Ni-Sn-WC, with different additions of Boron Carbide. The obtaining of this metallic matrix is intended for the production of pearls, for application in diamond wires used in cutting ornamental rocks. Five compositions were used for the investigation: samples with 2% B4C, 4% B4C, 5% B4C, 8% B4C, and 10% B4C. Initially, rectangular geometry composites were obtained via hot pressing, they were sintered under the same temperature conditions (800°C) and pressure (34MPa). The obtained segments reached approximately 18.00 mm in length, width between 12.80 mm and 15.20 mm, and 3.00 mm in height. The samples were characterized by the mechanical bending test, which allowed the investigation of properties at room temperature, such as yield strength, ultimate tensile strength, longitudinal elasticity modulus, toughness modulus, and resilience modulus. The results showed that the mixture containing 2% B4C presented better overall results. The studies conducted here serve as a basis for the development of new research aimed at producing diamond matrices for use in cutting tools. The inclusion of B4C in Fe-Cu-Ni-Sn-WC composites for creating ornamental rock cutting tools not only enhances efficiency and sustainability in the industry but also promotes significant advances in scientific research and the training of new specialists.