Preparation and microstructure evolution of W-Fe-B ternary system

W-Fe-B ternary system with different process parameters were fabricated the pressureless sintering method. Effects of sintering of Fe, FeB and W raw powders on the synthesis behavior of W-Fe-B alloy were systematically investigated. The results showed that the density of W-Fe-B alloy is 10.5 g/cm3. The hardness, compressive strength and bending strength first increased and then decreased with sintered temperature increasing from 1270 °C to 1330 °C and holding time maintaining 1 h to 2.5 h. Synthesized W-Fe-B alloys have superior comprehensive properties with hardness of 531.4 ± 0.4 HV and bending strength of 955 ± 2 MPa in holding 2 h under 1300 °C. According to the results of tests, high performance W-Fe-B alloy would make greater contributions in future cutter and mould industries.