低密度TiB2/铝基复合材料的显微组织与内耗性能
Microstructure and Internal Friction of Low Density TiB2/Al Based Composites
摘 要
为了获得具有良好显微组织和内耗性能的TiB2增强铝基复合材料,采用K2TiF6和KBF4混合盐放热反应(LSM)法制备了TiB2/铝基复合材料,采用扫描电镜、光学显微镜和X射线衍射仪等对所制备的复合材料进行了表征,并对其内耗性能进行了研究.结果表明:采用LSM法制备的TiB2/铝基复合材料密度低于3.5 g·cm-3,原位生成的TiB2增强相细小且分布均匀,复合材料具备较好的内耗性能(内耗值为6.65×10-3左右),是一种低密度高内耗的复合材料.
低密度
内耗
TiB2/Al based composite
low density
internal friction
Abstract
In order to obtain Al based composites with favorable microstructure and high internal friction,the TiB2/Al based composite was fabricated with an exothermic reaction process via K2TiF6 and KBF4 salts (LSM).The prepared composite was characterized by scanning electronic microscope,optical microscope and X-ray diffraction.And the internal friction capacity was also investigated.The results indicate that the density of TiB2/Al composite prepared by LSM was lower than 3.5 g·cm-3,the in-situ TiB2 phase was fine and well-distributed,and the composites performed well in internal friction (the internal friction value was about 6.65×10-3).So the TiB2/Al based composites was a kind of material with low density and high internal friction.
中图分类号 TG146.1
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(50864002);广西研究生教育创新计划资助项目(2008105930805M076)
收稿日期 2008/2/6
修改稿日期 2008/11/17
网络出版日期
作者单位点击查看
备注黄文貌(1983-),男,湖南长沙人,硕士研究生.
引用该论文: HUANG Wen-mao,XU Zheng-bing,SHANGGUAN Qi,XU Ling-yan,HE Juan,ZENG Jian-min. Microstructure and Internal Friction of Low Density TiB2/Al Based Composites[J]. Materials for mechancial engineering, 2009, 33(2): 63～66
黄文貌,许征兵,上官琪,许灵艳,何娟,曾建民. 低密度TiB2/铝基复合材料的显微组织与内耗性能[J]. 机械工程材料, 2009, 33(2): 63～66
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【3】Zhang X N,Wu R J,Zhang D.The development way of high damping metal matrix composite[J].Development and Application of Materials,1997,12(1):4548-4552.
【4】Gu Jinhai,Zhang Xiaonong,Gu Mingyuan,et al.Internal friction peak and damping mechanism in high damping 6061Al/SiCp/Gr hybrid metal matrix composite[J].Journal of Alloys and Compounds,2004,372:304-308.
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【6】易宏坤,刘兆婷,李飞虎,等.A1-17Si-xLa合金室温阻尼-应变振幅行为研究[J].功能材料,2003,34(5):525-529.
【7】ZHANG Yi-jie,MA Nai-heng,WANG Hao-wei,et al.Damping capacity of in situ TiB2 particulates reinforced aluminium composites with Ti addition[J].Materials and Design,2007,28:628-632.
【8】陈东,乐永康,白亮,等.原位TiB2/7055铝基复合材料的力学性能与阻尼性能[J].功能材料,2006,37(10):1599-1602.
【9】陈子勇,陈玉勇,舒群,等.盐类反应制备.TiB2/Al-4.5Cu复合材料的研究[J].特种铸造及有色合金,1997(6):1-4.
【10】张宝昌.有色金属及其热处理[M].西安:西北工业大学出版社,1993.
【11】刘维镐,朱劲松.高阻尼铝基复合材料的研究[J].功能材料,2001,32(4):440-442.
【12】Pei Zheng,Wang Jinhua,Guo Hongguang,et al.Analysis of micromechanism of damping for Al-matrix composites[J].Ordnance Material Science and Engineering,2001,24(1):8-10.
【13】Zhang J,Perez R J,Lavernia E J.Effect of SiC and graphite on the damping behavior of metal matrix composites[J].Acta metal Mater,1994,42(2):395-409.
【14】Zhang J,Perez R J,Lavernia E J.Dislocation-induced damping in metal matrix composites[J].J Mater Sci,1993,28:835-846.
【15】Granato A,Lücke K.Theory of mechanical damping due to dislocation[J].J Appl Phys,1956,27:583-789.
【16】Zhang M G,Chang Z L,Yan J M,et al.Investigation of the behavior of rare earth element cerium in aluminum-lithium al1oys by the method of internal friction[J].J Mater Proc Tech,2001,15(3):294-297.
【17】Ke T S,Cui P,Su C M.Internal friction in high purity aluminum single crystals[J].Phys Stat Sol A,1984,84(1):157-164.
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