Advanced Composite Materials

The Korean Society for Composite Materials (한국복합재료학회)
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Thermostability of Monolithic and Reinforced Al-Fe-V-Si Materials

  • He, Yiqiang (College of Mechanical Engineering, Huaihai Institute of Technology) ;
  • Qiao, Bin (College of Mechanical Engineering, Huaihai Institute of Technology) ;
  • Wang, Na (Department of Human Resources, Huaihai Institute of Technology) ;
  • Yang, Jianming (College of Mechanical Engineering, Huaihai Institute of Technology) ;
  • Xu, Zhengkun (Department of Mechanical Engineering, Zhangjiajie Institute of Aviation Industry vocational) ;
  • Chen, Zhenhua (College of Materials Science and Engineering, Hunan University) ;
  • Chen, Zhigang (College of Materials Science and Engineering, Hunan University)
  • Received : 2007.11.05
  • Accepted : 2008.11.04
  • Published : 2009.12.01
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Abstract

Al-Fe-V-Si alloys reinforced with SiC particles were prepared by multi-layer spray deposition technique. Both microstructures and mechanical properties including hardness and tensile properties development during hot exposure process of Al-8.5Fe-1.3V-1.7Si, Al-8.5Fe-1.3V-1.7Si/15 vol% $SiC_P$ and Al-10.0Fe-1.3V-2Si/15 vol% $SiC_P$ were investigated. The experimental results showed that an amorphous interface of about 3 nm in thickness formed between SiC particles and the matrix. SiC particles injected silicon into the matrix; thus an elevated silicon concentration was found around $\alpha-Al_{12}(Fe,\;V)_3Si$ dispersoids, which subsequently inhibited the coarsening and decomposition of $\alpha-Al_{12}(Fe,\;V)_3Si$ dispersoids and enhanced the thermostability of the alloy matrix. Moreover, the thermostability of microstructure and mechanical properties of Al-10.0Fe-1.3V-2Si/15 vol% $SiC_P$ are of higher quality than those of Al-8.5Fe-1.3V-1.7Si/15 vol% $SiC_P$.

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References

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