Fracture toughness studies in sintered SmCo5 magnets

Abstract The fracture toughness of sintered SmCo 5 magnets were systematically evaluated using both three point bend tests as well as Vickers indentation tests. These results were used for establishing the empirical dimensionless constant ( χ ) for evaluating indentation fracture toughness in SmCo 5 magnets. The anisotropic behaviour of mechanical properties such as hardness, elastic modulus and fracture toughness was also investigated.