Mechanical behaviors of ZL109/Al2O3·SiO2 particle reinforced composites

摘要：

The squeeze-casting method is utilized to synthesize ZL109/Al2O3·SiO2 particle reinforced composites with 5％,10％,20％,30％ (volume fraction) Al2O3·SiO2 particles,respectively.The microstructures and mechanical behaviors of ZL109/Al2O3·SiO2 particle reinforced composites were studied,and the mechanical properties were tested.The results show that Al2O3·SiO2 particles can be homogeneously distributed on the aluminum matrix in this process.The hardnesses of the composites are higher than that of the Al matrix,and increases with increasing the volume fraction of Al2O3·SiO2 particles.The tensile strengths and elongations of the composites are lower than that of the Al matrix,and decrease with increasing the volume fraction of Al2O3·SiO2 particles.The fracture characteristics of the composites has an obvious change with increasing the volume fraction of Al2O3·SiO2 particles on the fracture section,the toughness dens become smaller and shallower,and the tearing ridges and “rivers pattern appear.The fracture characteristics of the composites become fragile from ductile with the increase of the volume fraction of Al2O3·SiO2 particles.Elastic moduli of the composites have little change compared with the Al matrix.

关键词： Al-matrix composites Al2O3·SiO2 particles squeeze-casting method mechanical behaviors fracture mechanism

作者: LI Yue-ying CAO Zhan-yi LIU Yong-bing

作者单位: Key Laboratory of Automobile Materials(Ministry of Education),Jilin University,Changchun 130025,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）