Abstract
In order to improve the mechanical properties of W-Ni-Fe heavy alloys, the mechanical properties of this alloy containing Re were studied.
The Re modified alloys exhibited a smaller grain size than unalloyed system. The addition of Re to classic W-Ni-Fe heavy alloy results in an increase in strength and hardness and decrease in elongation.
This property combination results from the aggregate effects of grain size reduction due to the addition of Re.
These results were discussed in terms of microstructures, size of fracture source, toughness of matrix, etc...
