粉末粒度对快速凝固／粉末冶金Al-Fe-Mo-Si／Zn-Al复合材料组织与性能的影响  

Effects of Powder Particle Size on Microstructure and Properties of RS P/M Al-Fe-Mo-Si/Zn-Al Composites

作　　者：李伟[1] 李沛勇[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2006年第2期12-15,共4页Journal of Aeronautical Materials

摘　　要：研究不同粉末粒度Al-9．0％Fe-1．8％Mo-1．7％Si／5％(Zn-30％Al)金属／金属复合材料的组织、拉伸性能和阻尼性能。快速凝固粉末由气体雾化制备,选取平均粒度d50分别为27．3,36．2,41．6μm粉末装入包套,经除气,再热挤压制成棒材。结果表明,粉末粒径越粗,强化相越粗大,呈团聚体存在,且有偏聚现象,材料的强度明显下降,室温下粉末较细材料的阻尼性能较好,高于100℃时粉末粒度较粗材料的阻尼性能好。The microstructure, tensile properties and damping capacity of Al-9. 0Fe-1. 8Mo-l. 7Si/5. 0% ( Zn-30% Al) metal/metal composites with different powder particle size were investigated. The powders were produced by gas-atomization. The powders with average size (d50) of 27. 3 ,36. 2,41. 6μm were canned and degassed, followed by hot extrusion. The results showed that the coarser powders were, the larger dispersoids were. In addition, the agglomeration of the dispersoids could be found in the coarse powder. The...

关 键 词：粉末粒度 快速凝固/粉末冶金 金属基复合材料 组织 性能 

分 类 号：TF125[冶金工程—粉末冶金]