Microwave sintering and heat treatment method for preparing high-performance tungsten-based high-density alloy

A microwave sintering and heat treatment method for preparing high-performance tungsten-based high-density alloy comprises the following steps: preparing a powder compact by a traditional powder metallurgy method, putting the compact in a microwave high-temperature furnace with atmosphere protection and a vacuum pump, controlling the atmosphere in the furnace chamber to be reducing atmosphere at a heating phase below 1200 DEG C; sintering the product at low vacuum at a high-temperature phase of 1200-1400 DEG C, and vacuumizing the furnace to obtain a high vacuum of 10-2 Pa at a cooling phase after sintering. The obtained alloy has a uniform fine grain structure, and high mechanical properties. The invention adopts low vacuum at the sintering phase, and adopts high vacuum at the cooling phase, which allow the hydrogen content of the alloy to be reduced, and effectively avoid the hydrogen embrittlement phenomenon. Additionally, the tungsten-based high-density alloy is prepared by microwave sintering technology and equipment, which is rapid, high-efficient, simple, and low in cost; the tungsten-based high-density alloy is prepared by microwave sintering-heat treatment technology; theprocess is easy to control; the technology is mature, and is applicable to industrial production.