DEFORMATION-BEHAVIOR DURING SOLIDIFICATION OF STEELS

A high temperature tensile test of high carbon steels was executed in the temperature range of the mushy zone. Results were interpreted from the viewpoint of solidification progress which was estimated by numer ical simulation of microsegregation. The minimum temperature among tho se at which ductility is zero corresponded to a solid fraction around 1 for high purity samples; this is because the brittleness in this tem perature range is caused by the remaining liquid. Low purity samples e xhibited a different ductility.