Abstract
This report describes the results of investigations on the improvement mechanical properties of W-Ni-Fe heavy alloys which were produced with optimum Ni/Fe ratio and addition of suitable amount of Co to basic composition of W-Ni-Fe.
These alloys are produced by liquid phase sintering of mixed elemental Ni and Fe powder in a ratio region 1 : 1-10 : 1 with addition of Co content of about 0.5 and 1.0 wt%.
The strength and ductility at room temperature of the heavy alloys attained a maximum with Co content of about 0.5 wt% with the Ni/Fe ratio of about 4.0.
These results were discussed in terms of microstructures, size of fracture source, toughness of matrix, etc.
