摘要
对真空热压法制备的不同尺寸SiC颗粒增强铝基复合材料的组织性能进行了研究。结果表明:随着SiC颗粒尺寸的减小,复合材料的致密度增加,抗拉强度增大;当SiC颗粒平均粒径为15μm时,材料的拉伸性能最好。当SiC颗粒尺寸为15μm时,复合材料断裂方式主要为界面处撕裂为主;SiC颗粒尺寸为40μm时,复合材料的断裂主要以SiC颗粒断裂为主;介于两者之间的25μmSiC颗粒的复合材料断裂方式则由界面处撕裂和SiC颗粒断裂共同组成。
The aluminum matrix composites reinforced by SiC particle with various sizes by vacuum hot pressing sintering were studied. The results indicated that the relative density and the tensile strength of the composite increase with decreasing particle size. The composite reinforced with 30vol% SiC particle （15μm） has the best tensile property. When particle size is 15μm, the breakage was mainly due to tearing of matrix near interface. The failure of composites with 40μm particle size is resulted from crack of SiC particle. When particle size is 25μm,the failure of composite is resulted from tearing of matrix near interface and crack of SiC particle.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2013年第5期344-348,共5页
Powder Metallurgy Technology
基金
河南省国际合作项目基金(084300510006)
关键词
铝基复合材料
颗粒尺寸
抗拉强度
断裂机理
aluminum matrix composites
particle size
tensile strength
fracture mechanism
