Microstructure and properties of coarse WC-10CoCrFeMnNi cemented carbide by mechanical alloying and hot pressing sintering

Abstract

WC-10CoCrFeMnNi coarse cemented carbide was made by hot pressing sintering at temperatures of 1000 ℃, 1100 ℃, 1200 ℃, and 1300 ℃, respectively. Using powders of the high entropy alloy (HEA) CoCrFeMnNi that have been mechanically alloyed (MA). Through the use of X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, electron backscatter diffraction, Vickers microhardness testing, transverse rupture strength testing, and friction wear testing, the microstructure and general properties of coarse WC-HEA cemented carbide were investigated. With hardness, fracture toughness, transverse rupture strength, and coefficient of friction of 1206 HV30, 9.34 Mpa.m1/2, 1222 Mpa, and 0.595, respectively, WC-10CoCrFeMnNi cemented carbide exhibits the best combination of properties. By examining the experimental data, it was possible to produce the WC-10CoCrFeMnNi cemented carbide at 1100 °C with good overall performance. According to the excellent performance of WC-HEA in fracture toughness, it becomes possible as a new type of cemented carbide.