Measuring Strains for Hematite Phase in Sinter by Electron Backscattering Diffraction Method

Abstract

Based on the relationship between quantified blurring degree of Kikuchi bands obtained by an electron backscattering diffraction (EBSD) technique and macroscopic strains measured by a strain gauge, the local compression strain S_EBSD in sinter ore has been evaluated. There is a good linear relationship between the average of S_EBSD (denoted by S_AVE) and the strain measured by a strain gauge (S_MEAS).
S_AVE=1.9S_MEAS
From the variation of S_EBSD on the distance from the grain boundary, the local strain is found to be mainly distributed in the volume near grain boundaries. It has been confirmed that the local strain S_EBSD evaluated by EBSD patterns can be used as an index of local strains.