Effect of High Energy Ball Milling Time on the Performance of W-Cu Composites

W-15wt%Cu powder was milled by planetary high energy ball milling,then the milled powder was sintered in pressure.The effect of different milling time on performance of W-Cu composites was investigated.Phase and structure of milled powder or sintered alloy were analyzed by XRD and SEM respectively,the relative density of sintered alloy was measured as well.The results show that with the increase in milling time,the crystal sizes of W-Cu milled powder will be finer,while the undersaturation solid solution will generate,the crystal sizes of sintered alloy will grow up,holes will reduce and the relative density will increase and approach to full density.