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Si diffusion behavior during laser welding-brazing of Al alloy and Ti alloy with Al-12Si filler wire |
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| Authors: | CHEN Shu-hai LI Li-qun C HEN Yan-bin LIU De-jian State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technolo gy Harbin China |
| Affiliation: | State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
| Abstract: | In laser welding-brazing of Al alloy (5A06) and Ti alloy (Ti-6Al-4V) with rectangular CO2 laser spot and with Al-12Si filler wire, element Si enriches at the interface between Ti substrate and the filler metal. It is found that the Si diffusion behavior has a significant effect on the formation of interfacial intermetallic compounds. To analyze the Si diffusion behavior, a model for the prediction of the chemical potential for ternary alloy was established. According to the calculated results of the influen... |
| Keywords: | laser welding-brazing diffusion behavior chemical potential interfacial reaction |
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