The influences of peritectic reaction on cellularPCGare more
complicated. When the distance l between cellular and planar front (Fig. 8(a)) is short, peritectic reaction around liquid//
trijunctions can directly influence the growth of cell tips and
make the cells irregular (Figs. 5 and 6(a)). The cellular growth
is irregular and discontinuous, which is more or less like the
islands formation. It is difficult for cellularPCGto reach a steady
state with such irregular cell tips. In contrast, when the distance
l is long enough, the peritectic reaction at the trijunctions falls
behind to affect the growth of and cellular PCG may reach a
steady state under proper growth conditions and sample compositions.
In addition, the transition zones of cellular PCG are
usually very short. As a result, cellular PCG can be one candidate
method to produce peritectic in situ composites in peritectic
systems [24].