Microstructure and Mechanical Properties of 2024Al/SiCp Metal-matrix Composites Prepared by Powder Metallurgy Activated Sintering Technology
In this investigation,high density 2024Al/SiCp metal-matrix composites have been fabricated by powder metallurgy activated sintering technology.Loose powder by means of ultrasonic vibration,control of sintering atmosphere on pressureless sintering,the relative density of 99％ or more of powder metallurgy of aluminium matrix composites can be obtained.The microstructure and SiC particulate performance of the 2024Al/ SiCp composites were investigated using optical morphology,scanning electronic microscopy,energy dispersive spectrometer and X-ray diffraction analysis.Microstructure characterization of the composites showed relative uniform reinforcement distribution and presence of minimal porosity.Meanwhile,The presence of submicron-SiC particulates assisted in improving the thermal stability,micro-hardness,elastic modulus and 0.2％ yield strength.Both of the 0.2％ yield strength and ultimate tensile strength increased with the increasing of SiC particulate content,however,decreased as the SiC particulate content overrun 25 vol.％.
aluminium matrix composites SiC particulate powder metallurgy activated sintering technology
Anping Ye Zhimeng Guo Ji Luo Huiqin Cao Junjie Hao
Institute of Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China
国内会议
厦门
英文
1-4
2013-11-01（万方平台首次上网日期，不代表论文的发表时间）