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http://dx.doi.org/10.1163/156855109X434775

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)
Publication Information
Advanced Composite Materials / v.18, no.4, 2009 , pp. 339-350 More about this Journal
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% $SiC_P$.
Keywords
Metal-matrix composites; heat resistant aluminum alloy; annealing; thermostability;
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