Die-less manufacturing of tube by diffusion bonding of unit rods made of tungsten heavy alloy

A die-less method to manufacture tubes by diffusion bonding of rods made of tungsten heavy alloys was developed and characterized. Tungsten heavy alloys are pseudo-alloys of tungsten (W) with small amounts of lower-melting-point binder metals, typically Ni and Fe, and they are widely used in tubular shapes. Due to the excessively high consolidation temperature for W, the fabrication of components is normally done by sintering of powder compacts....