粉末对高铜含量钼铜合金均匀性的影响

Effect of powder on uniformity of molybdenum copper alloy with high copper content

本试验从粉末选择的角度出发研究了粉末对高铜含量的钼铜合金的均匀性的影响。对比所选用粉的参数包括粒度、粒度分布和微观形貌;对比不同粉在相同工艺下制备出的钼铜合金的均匀性,包括探伤结果、铜含量和金相组织。从而分析粉末对高铜含量的钼铜合金的均匀性的影响。研究结果表明,熔渗法制备高铜含量的钼铜合金时,需要在混料时添加铜粉才能充分熔渗无孔隙,并保证成分的均匀性;粉末的团聚对组织均匀性影响较大,钼粉团聚易造成钼颗粒富集,铜粉团聚易造成铜富集,从而影响高铜含量的钼铜合金组织的均匀性。

The effect of powder on the uniformity of molybdenum copper alloy with high copper content was studied from the perspective of powder selection. Comparing the parameters of the selected powder, including particle size, particle size distribution and micro morphology. The uniformity of molybdenum copper alloys prepared by different powders under the same process is compared, including ultrasonic flaw detection results, copper content and metallographic structure. The effect of powder on the uniformity of molybdenum copper alloy with high copper content is analyzed. The results show that when preparing molybdenum copper alloy with high copper content by infiltration method, copper powder needs to be added during mixing in order to fully infiltrate without pores and ensure the uniformity of composition;The agglomeration of powder has a great influence on the microstructure uniformity. The agglomeration of molybdenum powder is easy to cause the enrichment of molybdenum particles, and the agglomeration of copper powder is easy to cause the enrichment of copper, which affects the microstructure uniformity of molybdenum copper alloy with high copper content.