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LY12铝合金表面电火花强化层组织与性能研究
引用本文:郭锋,李平,苏勋家,侯根良,谷建荣.LY12铝合金表面电火花强化层组织与性能研究[J].材料工程,2010(1).
作者姓名:郭锋  李平  苏勋家  侯根良  谷建荣
作者单位:1. 第二炮兵工程学院,西安,710025
2. 中国人民解放军96633部队,北京,100096
摘    要:采用自制电火花强化机,以TC4合金作为电极,在空气介质中对LY12铝合金进行了表面强化。分别用扫描电镜、电子能谱分析仪与X射线衍射仪对强化层的组织、成分与结构进行了分析与研究;用显微硬度计与磨损试验机等实验设备对强化层的显微硬度与耐磨性进行了测量与分析。结果表明:强化层连续、致密,与基体之间呈冶金结合;主要由钛-铝金属间化合物和钛或铝的氮、氧化物相组成,显微硬度可达HV596;在干摩擦磨损实验条件下,强化后试样磨损体积仅为未强化试样的1/7。铝合金表面性能得到显著改善。

关 键 词:铝合金  TC4合金  电火花  表面强化  

Microstructure and Properties of Strengthened Coating on LY12 Alloy Surface Fabricated by Electrospark Deposition
GUO Feng,LI Ping,SU Xun-jia,HOU Gen-liang,GU Jian-rong.Microstructure and Properties of Strengthened Coating on LY12 Alloy Surface Fabricated by Electrospark Deposition[J].Journal of Materials Engineering,2010(1).
Authors:GUO Feng  LI Ping  SU Xun-jia  HOU Gen-liang  GU Jian-rong
Affiliation:1 The Second Artillery Engineering College;Xi' an 710025;China;2 The 96633 army of PLA;Beijing 100096;China
Abstract:The LY12 alloy surface was strengthened by electrospark system in air medium,with Ti6Al4V titanium alloy as electrode.The microstructure,element distribution and phase construction of strengthened coating were analyzed by scanning electron microscopic,energy-dispersive spectrum and X-ray diffractometer respectively.Furthermore,the microhardness distribution and wear resistance of strengthened coating contrast to LY12 substrate were studied by microhardness tester and abrasion tester respectively.The results...
Keywords:aluminum alloy  TC4 titanium alloy  electrospark  surface strengthening  
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