For DT < DT*, two recalescence events can be detected
(Fig. 1a), where usually the second recalescence
signal is weak. As shown in Figure 1c, a typical morphology
caused by peritectic solidification is obtained,
where the peritectic c phase (white) forms around the
primary d phase (dark). Peritectic solidification can be
further evidenced using the microsegregation pattern
of Ni (see Fig. 2), where the average Ni concentration
of d phase is much lower than that of c phase and
the concentration curves within the c phase show an