EUTECTOID POINT SHIFT AND ORIENTATION RELATIONSHIPS BETWEEN FERRITEAND CEMENTITE IN PEARLITE IN A HIGH MAGNETIC FIELD

摘要

The effect of a 12 Tesla magnetic field on microstructure, texture and orientationrelationship (OR) between pearlitic ferrite and cementite in a 0.81 C-Fe (wt.%) near eutectoid plaincarbon steel is investigated. Results show that the magnetic field shifts the eutectoid compositionfrom 0.77C%wt. to 0.84C%wt. Further calculation showed that this field increases the eutectoidtemperature by 29°C. The field applied slightly enhances the <001> fiber component in thetransverse field direction. This effect is related to the magnetic dipolar interaction between Featoms in the transverse field direction. There are mainly four ORs between pearlitic ferrite andpearlitic cementite that are Isaichev (IS), near Bagaryatsky (Bag) and two near Pitsch-Petch (P-P-1and P-P-2) ORs in both the field treated and non-field treated samples. However, with field theP-P-2 OR becomes more frequent. The promotion of a magnetic field on the high magnetizationphase, i.e., ferrite accounts for the frequent occurrence of P-P 2 OR.