It forms directly from the melt in the case of white cast iron. In carbon steel, it either forms from austenite during cooling or from martensite during tempering. It mixes with ferrite, the other product of austenite, to form lamellar structures called pearlite and bainite. Much larger lamellae, visible to the naked eye, make up the structure of Damascus steel, though the process has been lost to history.
Fe3C is also known as cohenite, particularly when found mixed with nickel and cobalt carbides in meteorites. This forms a hard, shiny, silver mineral which was first described by E. Weinschenk in 1889.
Image analysis of pearlite spheroidization based on the morphological characterization of cementite particles.(Original Research Paper)(Report)
Jul 01, 2010; INTRODUCTION Pearlitic steel consists of a soft ferrite matrix (aFe) containing hard lamellar Cementite ([Fe.sub.3]C)....