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钢纤维增强型Ti-Al爆炸焊接结合界面研究
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TJ45+9

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Study on Bonding Interface of Steel Fiber Reinforced Ti-Al Explosive Welding
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    摘要:

    为探究钢纤维增强型Ti-Al爆炸焊接参数对结合界面微观形貌的影响,采用光滑粒子流体动力学(SPH)方法模拟了爆炸焊接过程,分析了装药高度和板间距对结合界面波纹大小的影响。根据模拟结果进行了爆炸焊接试验,并通过金相分析对焊接质量进行了验证。模拟结果表明,提高装药高度可增大结合界面处波纹的波高与波长,从而提高焊接质量;减小板间距可减小波纹的波高与波长以避免过熔;最佳装药高度和板间距分别为12mm和1.0mm。金相分析表明,钢纤维与铝板和钛板结合紧密,结合界面有明显的小波纹存在,且界面光滑、无明显缺陷。

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    In order to investigate the effect of steel fiber reinforced Ti-Al explosive welding parameters on the micro- structure of bonding interface, smooth particle hydrodynamics (SPH) method was used to simulate the explosive welding process, and the effects of charge height and plate spacing on the ripple size of bonding interface were analyzed. According to the simulation results, the explosion welding test was carried out, and the welding quality was verified by metallographic analysis. The simulation results show that increasing the charge height can increase the wave height and wave length of the ripple at the bonding interface, thus improving the welding quality; Reducing the plate spacing can reduce the wave height and wave length of the ripple to avoid over melting; The optimum charge height and plate spacing are 12mm and 1.0mm respectively. Metallographic analysis shows that the steel fiber is closely combined with Al plate and Ti plate, and there are obvious small ripples at the bonding interface, and the interface is smooth without obvious defects.

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  • 在线发布日期: 2022-12-26
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