Microscopic Analysis on Crack of Marine Aluminium-steel Composite Transition Joint Interface
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摘要: 某型船用铝合金-纯铝-钢复合过渡接头焊接后界面开裂, 从开裂位置取样, 对开裂位置和未开裂位置进行金相分析和扫描电镜分析, 结果表明, 界面连续的铁-铝金属间化合物层是过渡接头界面开裂的主要原因。Abstract: Samples were taken from the interface crack position of the steel aluminum composite welded transition joints after sampling, and metallographic analysis and scanning electron microscopy analysis were adopted to investingate the crack position and non-crack position. Resutts showed that a consecutive iron-aluminum film on the interface was main reason for the crack of the interface of transition joint.
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