アルミニウム合金鋳物のT形交差部の凝固時間

抄録

  Numerical simulation of the solidification of T-junctions of an aluminum alloy revealed that the locality in solidification is less apparent than in cast iron; e.g. , the cooling effect of a thin fin attached to a plate is more apparent and heating effect at a thick junction is less apparent. One typical result is that hot spots formed at a thick junction of the aluminum alloy can be eliminated by adding a thin fin, whereas they cannot be eliminated in cast iron by the same method. The increase in solidification time at a junction with the increase in the fillet radius is only half of that of cast iron. The range of cooling effects at the end of the plate is two times longer in the aluminum alloy than in cast iron.