Si_3N_4颗粒增强铝基复合材料超塑性压缩试验研究  

Experimental Investigation of Superplastic Compression in Si_3N_4 Particulates Reinforced Aluminum Matrix Composite

作　　者：林飞[1] 范钧[1] 

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《新技术新工艺》2006年第7期56-58,共3页New Technology & New Process

基　　金：山西省青年科技研究基金资助项目(20001020)

摘　　要：采用粉末冶金法制备出了体积分数为2OSi3N4P／2124Al的铝基复合材料，初步研究了该材料的压缩超塑性，确定了该复合材料压缩超塑成形工艺参数，为这种复合材料超塑性成形的工程应用奠定了基础。研究表明，该复合材料在一定的工艺条件下可实现压缩超塑性，其最佳超塑压缩温度为515℃，最佳应变速率范围为1．225×10^-4 ～1．225×10^-1s^-1。In this paper, 20vol%Si_3N_4p/2124Al composite was fabricated by powder metallurgy. The preliminary research of compression superplasticity on the composite reinforced with Si3N4 particulates was conducted. The superplastic forming parameters of the composite in compression state were determined, established the technical foundation for its superplastic forming industrial application. The results show that the composite can realize compression superplasticity under certain process conditions, the optimal superplastic deformation temperature is 515℃ and the optimal strain rate ranges from 1.225×10~ -4 to 1.225×10~ -3 /s .

关 键 词：氮化硅 铝基复合材料 超塑性 压缩变形 

分 类 号：TB331[一般工业技术—材料科学与工程]