中文摘要：

采用粉末冶金瞬时液相烧结法制备了Al-Fe-Si/Al原位复合材料,应用X射线衍射仪（XRD）、扫描电镜（SEM）、能谱分析（EDS）研究了保温时间对瞬时液相烧结制备Al-Fe-Si/Al原位自生复合材料微观组织及力学性能的影响.结果表明：随着保温时间的延长,原位自生Al0.5 FeSi0.5相晶粒逐渐长大,材料表面孔隙尺寸减小;保温时间为4h时,粒状、短棒状增强相弥散分布在基体上;复合材料的压缩强度、最大弯曲挠度和弯曲强度随着保温时间的延长呈先上升后下降的趋势,但保温时间的延长对复合材料的弹性变形量和塑性变形量影响不大;随着保温时间的延长复合材料的界面结合增强.

英文摘要：

Al-Fe-Si/Al in situ composite was prepared by using powder metallurgy transient liquid phase sintering method.The influence of holding time on microstructure and mechanical property of Al-Fe-Si/Al in-situ composites was investigated by means of X-ray diffraction （XRD）,scanning electron microscopy （SEM） and energy dispersive spectroscopy （EDS）.The results show that the grain size of in-situ synthesized Al0.5FeSi0.5 increases and the pore size of materials surface decreases when prolonging the holding time.The granular and short-rod reinforced phases get a diffuse distribution on the substrate when the holding time is 4h.With holding time,the compressive strength,the maximum bending flexibility and the bending strength have a trend of rising first then falling.Moreover,the interface bond in the composites is enhanced.However,the holding time has no influence on the composite elastic deformation and plastic deformation.