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Microstructural study of laser-clad Fe-Al bronze on Al-Si alloy

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Abstract

Microstructure studies of laser-clad Fe-Al bronze on an Al-Si alloy were carried out by OM(optical microscope), SEM(scanning electron microscope), TEM(transmission electron microscope) and XRD(X ray diffraction) analyses. The cross-section of the laser-cladding was divided into clad region and transitional region. The clad region composes a matrix with a twin structure of needle-like and feathery appearance and a second phase of Cu9Al4. The transitional region consists of two layers. The layer close to the clad region shows polygonal crystalline while the layer close to the substrate region displays a needle-like structure. XRD analyses show that the main phases in the polygonal crystalline layer and the needle-like structure layer are Cu3Al + Cu9Al4 and CuAl2 + α-Al, respectively. Finally, the formation mechanism of two regions was analysed.

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Authors and Affiliations

  1. State Key Lab of Plastic Forming Simulation and Die & Mould Technology, Faculty of Materials Science & Engineering, Huazhong University of Science & Technology, Wuhan, 430074, People's Republic of China

    A. H. Wang & C. S. Xie

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  1. A. H. Wang
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  2. C. S. Xie
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Wang, A.H., Xie, C.S. Microstructural study of laser-clad Fe-Al bronze on Al-Si alloy. Journal of Materials Science 36, 1975–1979 (2001). https://doi.org/10.1023/A:1017514428148

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