ＷＮｉＦｅ高密度合金的致密化过程可分为固相烧结阶段和液相烧结阶段。在固相烧结时，发生孔隙扩散、颗粒接触而引起缺陷增生与扩散、缺陷的相互作用以及合金固溶体的形成，已使合金产生大部分致密化。在液相生成后，产生毛细管力、液相渗入和孔隙充填等，合金达到全致密化。 W  NiFe high-density alloy densification process can be divided into solid-phase sintering phase and liquid phase sintering. In the solid-phase sintering, the occurrence of pore diffusion, particle contact caused by proliferation and proliferation of defects, the interaction of defects and the formation of alloy solid solution, the alloy has been most of the densification. After the liquid phase is generated, capillary forces, liquid infiltration, pore filling and the like occur and the alloy is fully densified.