为了研究应用于聚变试验堆的面向等离子体部件中W与CuCrZr的焊接,选用有限元软件ABAQUS 对未用无氧铜箔、或使用不同厚度的无氧铜箔,及在不同温度、压力时的焊接应力进行了有限元分析.实验中使用、或未用无氧铜中间层均成功实现了W与CuCrZr的焊接.测定了焊接试样的剪切强度,并通过SEM观察了其断口形貌.实验结果表明,无氧铜箔的使用大大地提高了焊接强度,最高剪切强度高于198MPa,其剪切断口均位于距离焊缝1mm左右的钨块中,且在钨块中均出现了撕裂现象.ABAQUS有限元数值分析的结果表明,无氧铜箔很好地降低了W与CuCrZr之间的焊接应力,较低的焊接温度、较高的焊接压力、增加无氧铜箔的厚度均有助于减小W与CuCrZr之间的焊接应力.
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