Adhesive is used in the laser weld bonding Mg to A1 alloys process, in order to improve the property of laser welding joint. The effect of adhesive on the microstrnctures in laser weld bonding AZ31B Mg alloy to 6061Al...Adhesive is used in the laser weld bonding Mg to A1 alloys process, in order to improve the property of laser welding joint. The effect of adhesive on the microstrnctures in laser weld bonding AZ31B Mg alloy to 6061Al alloy are observed by scanning electron microscopy and transmission electron microscope. The results show that the decomposition of the adhesive makes influence on the crystal structure of the Mg fusion zone, which forms the C-Mn precipitates. The morphology of Mg-Al intermetallics is changed, when the adhesive decomposition gas bubble floats out of the fusion zone. Dislocations are formed at the bottom of Al fusion zone with the effect of adhesive decomposition and pulse laser power.展开更多
基金Acknowledgements The authors gratefully acknowledge tile sponsorship from China Postdoctoral Science Foundation （2102M510803 ） and Doctoral Scientific Research Foundation of Liaoning Province （ No. 201 11024）.
文摘Adhesive is used in the laser weld bonding Mg to A1 alloys process, in order to improve the property of laser welding joint. The effect of adhesive on the microstrnctures in laser weld bonding AZ31B Mg alloy to 6061Al alloy are observed by scanning electron microscopy and transmission electron microscope. The results show that the decomposition of the adhesive makes influence on the crystal structure of the Mg fusion zone, which forms the C-Mn precipitates. The morphology of Mg-Al intermetallics is changed, when the adhesive decomposition gas bubble floats out of the fusion zone. Dislocations are formed at the bottom of Al fusion zone with the effect of adhesive decomposition and pulse laser power.
