摘要
采用有限元数值模拟方法研究了冷却过程在Al Al2 O3 异种材料结构件钎缝处导致的剪切应力分布。计算结果表明 :最大剪切应力位于钎缝圆角处和靠近钎缝圆角的Al2 O3 陶瓷 /Cu镀层金属界面处 ,同时中间层合金的热膨胀系数与Al的热膨胀系数相匹配时 。
By means of finite element numerical simulation, the shear stress distribution in the fillet of Al Al 2O 3 soldering assembly was analyzed. The calculating results show that the maximum level of shear stress occurrs at the soldering fillet and the interface near the soldering fillet between Al 2O 3 ceramics and coated Cu. Meanwhile, in order to limit the shear stress as small as possible, the thermal expansion coefficient of interlayer alloy should match with the Al base metal.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第5期750-753,共4页
The Chinese Journal of Nonferrous Metals
基金
精密热加工国防科技重点实验室基金资助项目
