W的颗粒度对Ti-20W合金组织和力学性能的影响

i-20W Alloy were prepared by solid-phase sintering, using an initial different size of W and TiH2 powder as raw material。Microstructure and component were analyzed by optical micrographs (OM) and energy-dispersive spectroscopy (EDS).The microhardness and compression strength were also measured. The result show that dissolution of W powders in the Ti matrix during consolidation was almost complete for the fine powders,which exhibit much higher strength of compression and the distribution of microhardness value is uniform;when using coarse W powder, Dissolution of W powders in the Ti matrix was limited，whose strength of compression is lower。