钼粉粒度对钼铼合金性能的影响
Effect of molybdenum powder particle size on the properties of molybdenum rhenium alloys
张丹华 1王广达 1熊宁1
作者信息
- 1. 安泰科技股份有限公司,北京 100094
- 折叠
摘要
钼铼合金具有良好的室温延展性能和机械加工性能,在多个行业广泛应用.通过粉末冶金方法制备的钼铼合金性能受原料粒度的影响,试验研究了三种粒度的钼粉与铼粉混合制备的MR35合金,研究结果显示,费氏粒度3.6 μm的中颗粒钼粉与铼粉混合制备的钼铼合金坯料的致密度最高,变形率60％就可以达到99.9％的致密度,而费氏粒度7.0 μm的粗粒颗粒钼粉与铼粉混合制备的钼铼合金致密度最低,需要变形率超过80％达到99.9％的致密度.钼铼合金粉末粒度比值((D90+D10)/D50))与致密度存在正相关关系,比值越大则致密度越高.
Abstract
Molybdenum rhenium alloy has good room temperature ductility and mechanical processing proper-ties,which is widely used in multiple industries. The properties of molybdenum rhenium alloys prepared by pow-der metallurgy method are affected by the particle size of the raw materials. In this study,three different particle sizes of molybdenum powder and rhenium powder were mixed to prepare MR35 alloy. The results show that the molybdenum rhenium alloy mixed with medium particle molybdenum powder and rhenium powder has the high-est density,and a deformation rate of over 60％ obtain 99.9％ density,while the molybdenum rhenium alloy mixed with coarse particle molybdenum powder and rhenium powder has the lowest density. More than 80％ of the deformation rate is required to achieve a density of 99.9％. There is a positive correlation between the particle size ratio (D90+D10)/D50) of molybdenum rhenium alloy powder and its density.
关键词
粒度/粒度分布/烧结密度/变形率/力学性能Key words
particle size/particle size distribution/sintering density/deformation rate/mechanical property引用本文复制引用
基金项目
国家重点研发计划专项资助项目(2022YFB3705400)
出版年
2024
NETL
NSTL
万方数据