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Investigation of Orientation Gradients in Pearlite in Hypoeutectoid Steel by use of Orientation Imaging Microscopy
Author(s) -
Takahashi Tetsuya,
Ponge Dirk,
Raabe Dierk
Publication year - 2007
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200705857
Subject(s) - cementite , pearlite , materials science , ferrite (magnet) , microstructure , metallurgy , orientation (vector space) , composite material , austenite , geometry , mathematics
The microstructure of pearlite in hypoeutectoid steel was investigated using high resolution orientation imaging microscopy. Systematic orientation gradients were observed along the longitudinal direction within the pearlitic ferrite lamellae. Corresponding orientation gradients seemed to occur also in the cementite within the same pearlite colony. The orientation gradients in the ferrite strongly correlated with the local topographical curvature of the pearlitic colony. The orientation relationship between the ferrite and the cementite lamellae was constant even in areas with strong orientation gradients.