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闫俞廷,牛立斌,安玉姣,王圣雅,党利娟,闫梦婷,付哲.感应电流频率对原位合成Al3Ti/Al复合材料组织及性能的影响[1][J].稀有金属材料与工程(英文),2020,49(6):2175~2181.[yanyuting,Niu Libin,An Yujiao,Wang Shengya,Dang Lijuan,Yan Mengting and Fu Zhe.Effect of Induced Current Frequency on Microstructure and Properties of In-situ Synthesized Al3Ti/ Composites[J].Rare Metal Materials and Engineering,2020,49(6):2175~2181.]
Effect of Induced Current Frequency on Microstructure and Properties of In-situ Synthesized Al3Ti/ Composites
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Received:August 14, 2019  Revised:January 13, 2020
DOI:
Key words: Titanium fiber  induction heating  alternating current  wear resistance
Foundation item:科技部国际合作项目(2015DFR50990-01);陕西省纳米材料重点实验室开放课题(18JS060)和(18JS075);
Author NameAffiliation
yanyuting,Niu Libin,An Yujiao,Wang Shengya,Dang Lijuan,Yan Mengting and Fu Zhe  
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Abstract:
      Using metal Al as substrate and titanium fiber as reactive source,an Al3Ti/Al composite was fabricated by applying induction heating,and the inductive magnetic field generate by the coil was used to promote the in-situ reaction rate of aluminum and titanium.The reaction temperature was preliminarily judged by differential thermal analysis (DTC) to be about 800 degrees, and the obtained samples were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM) and wear testers.The results show that when the alternating current frequency is 7KHz, the current is 8A, and the time is 5min.,the titanium fiber react with Al completely,and the dispersed distribution of Al3Ti particles are in-situ synthesized, and the average size of the particles reach 3μm; Under the condition of 10N load and air as medium, the friction coefficient decreases first and then increases with the increase of alternating current frequency. The friction coefficient at the frequency of 7KHz is the lowest value of 0.2, the wear amount is the least, and the wear resistance is optimal.