The influence of sintering temperature on the grain distribution, mechanical properties and fracture probability of WC-10 wt% Co-Cr₃C₂ cemented carbide was studied. Based on thermodynamic calculations, the complete liquefaction temperature of the WC-10 wt% Co-Cr₃C₂ cemented carbides shows a descend trend with the increase of Cr content. The addition of 0.5 wt% Cr decreases the complete liquefaction temperature of the WC-10 wt% Co cemented carbides from about 1360 °C to 1310 °C, the sintering temperature were defined starting from this result and adding 30, 50 and 80 °C. For comparison, an industrial production sintering temperature of 1410 °C is also used. Compared with four sintering schedules, WC-10 wt%Co-0.5 wt% Cr cemented carbides has more uniform grain size and better mechanical properties at sintering temperature for 1360 °C. In addition, the fracture probability of WC-10 wt%Co-0.5 wt% Cr cemented carbides is improved at sintering temperature for 1360 °C. An appropriate sintering temperature can be established by thermodynamic calculations, which enables effectively control of grain size and mechanical properties.

研究了烧结温度对WC-10 wt％Co-Cr ₃ C ₂硬质合金晶粒分布，力学性能和断裂概率的影响。基于热力学计算，WC-10 wt％Co-Cr ₃ C ₂的完全液化温度硬质合金随Cr含量的增加呈下降趋势。添加0.5 wt％的Cr会使WC-10 wt％的Co硬质合金的完全液化温度从大约1360°C降至1310°C，从该结果开始定义烧结温度，并添加30、50和80°C 。为了进行比较，还使用了工业生产的1410°C烧结温度。与四个烧结时间表相比，WC-10 wt％Co-0.5 wt％Cr硬质合金在1360°C的烧结温度下具有更均匀的晶粒尺寸和更好的机械性能。此外，在烧结温度为1360°C时，WC-10 wt％Co-0.5 wt％Cr硬质合金的断裂几率得到了提高。可以通过热力学计算确定合适的烧结温度，