Analysis of the effect of solubility on the densification behavior of tungsten heavy alloys using the master sintering curve approach

摘要

The densification behavior of 88W-8.4Ni-3.6Fe, 88W-8.4Ni-3.6Cu, and W-15Cu during heating is compared using the master sintering curve (MSC) approach. The MSC parameters, such as the work of sintering, activation energy, and densification ratio, are calculated from dilatometry tests, based on which the densification is classified into three regions with different sintering mechanisms. This approach enables contrast and comparison of the densification sensitivity to solubility, temperature, and heating rate. The master sintering curves are combined into a master sintering surface that includes integral work and the solubility of tungsten in the liquid phase.