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Numerical and Experimental Studies on the Explosive Welding of Tungsten Foil to Copper

机译:钨箔与铜爆炸焊接的数值与实验研究

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摘要

This work verifies that the W foil could be successfully welded on Cu through conventional explosive welding, without any cracks. The microstructure was observed through scanning electron microscopy (SEM), optical microscopy and energy-dispersive X-ray spectrometry (EDS). The W/Cu interface exhibited a wavy morphology, and no intermetallic or transition layer was observed. The wavy interface formation, as well as the distributions of temperature, pressure and plastic strain at the interface were studied through numerical simulation with Smoothed Particle Hydrodynamics (SPH). The welding mechanism of W/Cu was analyzed according to the numerical results and experimental observation, which was in accordance with the indentation mechanism proposed by Bahrani.
机译:这项工作验证了W箔可以通过常规爆炸焊接成功焊接在Cu上,而没有任何裂纹。通过扫描电子显微镜(SEM),光学显微镜和能量色散X射线光谱法(EDS)观察微观结构。 W / Cu界面显示出波浪形,没有观察到金属间或过渡层。通过使用光滑粒子流体动力学(SPH)进行数值模拟,研究了波浪状界面的形成以及界面处的温度,压力和塑性应变的分布。根据数值结果和实验观察分析了W / Cu的焊接机理,这与Bahrani提出的压痕机理相吻合。

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