粉末粒度对TC4钛合金注射成形喂料性能的影响  

The effects of powder size distribution on properties of TC4 titanium alloy powder injection molding feedstock

作　　者：崔珊 张恩耀[1] 石芬[1] 周鹏 CUI Shan;ZHANG Enyao;SHI Fen;ZHOU Peng(Xi’an Aeronautical Polytechnic Institute,Xi’an 710089,China)

机构地区：[1]西安航空职业技术学院航空材料工程学院,陕西西安710089

出　　处：《粉末冶金工业》2024年第6期128-133,共6页Powder Metallurgy Industry

基　　金：陕西省高校青年创新团队项目(2019-73);陕西省教育厅青年创新团队建设科研计划项目(21JP055);西安航空职业技术学院高层次人才科研启动金项目(18XHQDJ-001)

摘　　要：金属粉末注射成形技术是一种先进的钛合金加工方法,注射成形产品的质量与喂料性能密切相关,而喂料的均匀性和流变性能是决定喂料质量的重要指标。本文采用粒度分析、显微形貌分析、均匀性分析及流变性能分析等方法,研究了球形TC4钛合金粉末粒度大小及粒度分布宽度对注射成形喂料性能的影响。结果显示,粉末粒度分布宽度越大,喂料装载量越高;粉末粒度分布宽度越窄,喂料均匀性越好;粉末粒度值越大,粒度分布宽度越窄,喂料流变性能越好。Metal powder injection molding technology is an advanced processing method of titanium alloy.The quality of injection molding products is closely related to the properties of feedstock,uniformity and rheological properties are important indexes to feedstock.In this paper,the effect of spherical powder size distribution on the properties of TC4 titanium alloy feedstock was studied by microscopic morphology analysis,uniformity and rheological properties analysis.The results show that the loading of feedstock can be effectively enhanced by increasing the distribution width of spherical powder size.Reducing distribution width of powder size is conducive to improving the uniformity of feedstock.Increasing the spherical particle size and reducing distribution width of powder size are two approaches to enhance the fluidity of feedstock.

关 键 词：TC4钛合金 金属粉末注射成形 喂料 均匀性 流变性能 

分 类 号：TF124.39[冶金工程—粉末冶金]