摘要
运用空气加压渗流技术制备了宏观石墨颗粒增强的工业纯铝金属基复合材料,在25~400℃温度范围和频率为0.5,1.0和3.0 Hz条件下在多功能内耗仪上测量了不同材料的内耗和相对动力学模量;用透射电子显微镜对材料的显微组织进行了观察;依据内耗测量和微观分析讨论了宏观石墨颗粒对工业纯铝阻尼行为的影响。结果表明:复合材料的阻尼性能随着宏观石墨颗粒体积分数的增加而增大,阻尼性能比致密工业纯铝提高了2~3倍。
Macroscopic graphite particulate reinforced commercially pure aluminum metal matrix composites(MMCs) were prepared by pressure infiltration process.The damping characterization was conducted using a multifunction internal friction apparatus(MFIFA).The internal friction(IF) and relative dynamic modulus were measured at frequencies of 0.5,1.0 and 3.0 Hz in the temperature range of 25 to 400 ℃.The microstructure analysis was performed using TEM.Influence of macroscopic graphite particalates on damping properti...
出处
《机械工程材料》
CAS
CSCD
北大核心
2008年第8期60-63,共4页
Materials For Mechanical Engineering
基金
江西省自然科学(青年)基金资助项目(0550050)
江西省教育厅科研项目(13-3-B-04)
关键词
阻尼
内耗
石墨颗粒
工业纯铝
damping
internal friction
graphite particulate
commercially pure aluminum
