By using electron microscopy, planar defects in the cementite of U8 eutectoid C-steel with a lamellar pearlitic structure were found. It was shown that these planar defects were arranged on planes of 2 crystallographic types: (101)cm and {103}cm. The shear vector for the (101)cm plane was determined. It lay parallel to the [¯101]cm direction, and characterized the stacking faults.

Crystallographic Analysis of Defects of Cementite in the Lamellar Pearlite of Carbon Steel. I.L.Yakovleva, L.E.Karkina, Y.V.Khlebnikova, V.M.Schastlivtsev: Physics of Metals and Metallography, 2001, 92[3], 281-92