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外文会议>Annual Hydrometallurgy Meeting
>EFFECT OF LASER POWER AND JOINT GAP ON WELD QUALITY OF AEROSPACE GRADE ZE41A-T5 MAGNESIUM ALLOY USING ND:YAG LASER
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EFFECT OF LASER POWER AND JOINT GAP ON WELD QUALITY OF AEROSPACE GRADE ZE41A-T5 MAGNESIUM ALLOY USING ND:YAG LASER
The effects of laser power and joint gap on the welding quality of 2-mm butt joints of ZE41A-T5 sand castings were investigated using a continuous wave 4 kW Nd:YAG laser system and 1.6-mm EZ33A-T5 filler wire at a welding speed of 6 m/min and surface defocusing. The smooth weld profiles with the minor welding defects were obtained at a laser power of 4 kW and joint gap of 0.3-0.4 mm. The hardness values in the fusion zone are similar to those of the base metal but there is a drop in the heat-affected zone after a natural aging of 18 months.
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