An Experimental Investigation of the Solid State Sintering of Cemented Carbides Aiming for Mechanical Constitutive Modelling

The densification of cemented carbides during sintering was studied using an existing constitutive model based on powder particle size and material composition. In the present analysis, we study how well the constitutive model can capture the experimental results of a dilatometer test. Three experiments were performed, where the only difference was the transition between the debinding and sintering process. From magnetic measurements, it is concluded that the carbon level in the specimen is affected by changes to the experimental setup. It is shown, using parameter adjustments, that the constitutive model is more suited for a certain experimental setup and carbon level, which is a limitation of the model. In order to capture the mechanical behaviour under different experimental conditions, further constitutive modelling relevant to the carbon level is recommended.

Automated summary

The densification of cemented carbides during sintering was studied using a constitutive model based on powder particle size and material composition. The study evaluated the model's ability to predict experimental results from a dilatometer test. Three experiments were conducted, with the only difference being the transition between the debinding and sintering process. It was found that changes to the experimental setup affected the carbon level in the specimens, and the constitutive model was limited to specific experimental setups and carbon levels. Further constitutive modelling relevant to the carbon level is recommended to capture mechanical behavior under different experimental conditions.