Abstract
In the previous reports, the relationship between the process of peritectic reaction and the relative position of the three phases on the peritectic line has been determined. The author’s object in this report is to observe in detail the manner of each phase (e.g. primary, secondary, ternary) in many peritectic structures and to examine the relationship between the form of this reaction and the relative position of the three phases on the peritectic line. As the result, it was found that furnace cooled structures of all peritectic alloys are classifiable according to the relative position between the three phases, i.e., by whether the ‾LS⁄‾SP value in more or less than unit, and gradually vary under some fixed rule. This is based on the difference of the forms of the peritectic reaction. This report concerns the result of the ‾LS>‾SP peritectic system.
