Visualizing the Fine Structure of Surface Bainite Layers on the Basis of EBSD Data

Abstract

Electron backscatter diffraction (EBSD) is widely used to investigate the mutual crystallographic orientation in the structural components of steel, including bainite. Nevertheless, the fine structure of bainite (subplates and plates, packet components) is not investigated by that means. A method is proposed for visualization of the surface structure of bainitic structural steel by means of the Euler angles determined by EBSD. For the example of 25G2S2N2MA steel, a three-dimensional map of the bainite substructure is obtained. This result agrees with data obtained by scanning-probe microscopy.