Effect of Ni interlayer on characteristics of diffusion bonded Mg/Al joints |
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| Authors: | Fuxing Yin Canchun Liu Yongguang Zhang Yanfang Qin |
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| Affiliation: | 1. School of Material Science &2. Engineering and Research Institute for Energy Equipment Materials, Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin, People’s Republic of China |
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| Abstract: | Magnesium and aluminium were joined through diffusing bonding with a Ni interlayer prepared by plasma spraying for the first time. Examination of the microstructure and phase constitution of interfacial regions indicated that Mg–Al reaction was successfully prevented in the presence of the Ni interlayer. With the elevation of temperature, a reaction layer of Mg2Ni intermetallic was formed at Mg/Ni interface but few Al–Ni intermetallic was generated at Al/Ni interface. The mechanical test results showed that the tensile strength of the Mg/Al joint was substantially improved compared to that of the direct joint of Mg and Al. A maximum value of 5.8?MPa was obtained at 420°C for the joint with Ni interlayer. |
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| Keywords: | Al–Mg Ni interlayer interface microstructure diffusion bonding |
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