Abstract
AbstractThe shear stress distribution in an Al-Al2O3 soldering assembly after the cooling stage has been analysed via finite element numerical simulation. The effects of the coefficient of thermal expansion of the solder alloy and the fillet geometry have been investigated. The calculation results showed that, to achieve a minimal shear stress response, the coefficient of thermal expansion of the solder alloy should match that of the Al base metal and the geometry of the soldering fillet should be a concave shape having an extruding length somewhat less than the fillet height.
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