Energy-storage welding connection characteristics of rapidly solidified Cu-Co alloy foils

来源期刊：中国有色金属学报(英文版)2004年第4期

论文作者：徐锦锋 翟秋亚 蒋永

文章页码：785 - 789

Key words：rapidly solidified alloy foils; energy-storage welding; nugget; joint microstructure

Abstract: The connection characteristics of rapidly solidified Cu-40%Co alloy foils were studied using a self-developed micro-type energy-storage welding machine. The results show that the microstructure of the alloy foils is characterized by uniform and fine equiaxed grains, whose maximum grain size is 1.8μm. Under the optimum energy, the regular flat nugget is formed, low voltage and high capacitance are favorable for obtaining the perfect connection joints, whereas high voltage and low capacitance are likely to result in the surface burn of the alloy foils. With the increase of welding energy, the spot welding joint will be transformed from regular flat nugget to nugget-free one, and the microstructure tends to coarsen. The welding parameters recommended are: welding voltage 80-100 V, electric capacitance 1 800-2 500μF, and welding force 4-8 N.