镁基复合材料力学性能与微观组织研究  

Research on the Mechanical Properties and Microstructure of Magnesium Matrix

作　　者：宁海青[1,2] 陈嫚丽[1,2] 王艳彬[1,2] 赵志翔[1,2] 

机构地区：[1]中国兵器工业第五九研究所,重庆400039 [2]国防科技工业精密塑性成形技术研究应用中心,重庆400039

出　　处：《精密成形工程》2011年第1期27-29,共3页Journal of Netshape Forming Engineering

摘　　要：采用了液态浸渗法制备了Al2O3短纤维和SiC颗粒混杂增强镁合金复合材料。研究了浸渗压力对镁基复合材料力学性能和微观组织的影响。研究表明,当浸渗压力从0.4MPa增加到60MPa的过程中,由于组织的密实使得力学性能上升;随着浸渗压力的增加,将导致预制体受到压缩变形,纤维折断,从而导致综合力学性能下降。Liquid infiltration was used to prepare magnesium matrix composites reinforced by Al2O3 short fibers and SiC particles. Effects of pressure during liquid infiltration on the mechanical properties and microstructures were also investigated. Results show that when the pressure increased from 0.4 MPa to 60 MPa, the mechanical properties of magnesium matrix composites were increased due to the densifieation of microstructure. With further increasing pressure, because the preformed body was subjected to compression and short fibers were broken down, the mechanical properties of magnesium matrix composites were decreased.

关 键 词：液态浸渗 力学性能 微观组织 镁基复合材料 

分 类 号：TG146.22[一般工业技术—材料科学与工程]