WC-6%Co cemented carbides tools with improved performances were successfully prepared using Micro-FAST method in less than 5 min with a Gleeble-1500D thermal simulation machine. Effects of the sintering temperature and heating rate on the densification, microstructure, mechanical properties were investigated and cutting performance of sintered samples were evaluated. It was found that densification of the samples was enhanced with the increase of the sintering temperature from 900 to 1200 °C while the consolidation process is facilitated with the initial increase of the heating rate to 50 °C/s and retarded with its further increase to 100 °C/s. A relative density of as high as 97.71% and a hardness of 21.7GPa were reached when a sintering temperature of 1200 °C, a heating rate of 50 °C/s and a holding time of 12 min were used. A higher sintering temperature along with a reasonably higher heat rate can produce a denser microstructure while pores remain in the sample when a heating rate higher than 50 °C/s is adopted. The tool prepared by the Micro-FAST exhibits the improved cutting performance than that by the traditional approach. The presented study shows that Micro-FAST can be a potentially very effective way to produce the cutting tools to meet the engineering application.

使用Micro-FAST方法在不到5分钟的时间内使用Gleeble-1500D热模拟机成功地制备了具有改进性能的WC-6％Co硬质合金刀具。研究了烧结温度和加热速率对致密化，显微组织，力学性能的影响，并评估了烧结样品的切削性能。结果发现，随着烧结温度从900°C升高到1200°C，样品的致密化得到增强，而加热速率的最初增加到50°C / s则促进了固结过程，而随着烧结温度的进一步升高，固结过程受到了阻碍。 100°C /秒。当使用1200℃的烧结温度，50℃/ s的加热速率和12分钟的保持时间时，相对密度高达97.71％，硬度为21.7GPa。当采用高于50°C / s的加热速率时，较高的烧结温度和合理较高的加热速率可以产生致密的微观结构，同时在样品中保留孔洞。与传统方法相比，Micro-FAST所准备的刀具具有更高的切削性能。提出的研究表明，Micro-FAST可能是生产满足工程应用需求的切削工具的潜在非常有效的方法。