Accurate orientation relationships between ferrite and cementite in pearlite

Journal Article · Mon Dec 15 00:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00396-5· OSTI ID:586053

Zhang, M X; Kelly, P M ^[1]

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1. Univ. of Queensland, Brisbane, Queensland (Australia). Dept. of Mining, Minerals and Materials Engineering

In most previous work, the interlamellar interface between pearlitic ferrite and cementite is considered to have a low energy and dislocations have been observed at the interfacial boundary, in both plain carbon steels and high manganese steels. Here, four new orientation relationships (ORs) between pearlitic ferrite and cementite have been determined using the more accurate CBKLDP technique. In eutectoid steel the pearlite obeys the New-2, New-3 and New-4 ORs; in hypoeutectoid steel only the Isaichev OR is observed; in hypereutectoid steel the New-5 OR is followed. The two widely accepted ORs, the Pitsch-Petch OR and the Bagaryatskii OR have never been observed. They probably do not exist.

• OSTI ID: 586053
• Journal Information: Scripta Materialia, Vol. 37, Issue 12; Other Information: PBD: 15 Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STEELS
MICROSTRUCTURE
FERRITE
CEMENTITE
PEARLITE
GRAIN ORIENTATION
ELECTRON DIFFRACTION