2018 Volume 58 Issue 6 Pages 1181-1183
The effect of instrumental correction on X-ray line profile analysis was discussed in cold rolled low carbon ferritic steel. It was confirmed that the effect of instrumental broadening is underestimated by utilizing Gaussian correction in comparison with Voigt correction. The values of micro-strain, which were evaluated by the recently developed direct fitting method, were overestimated slightly in Gaussian correction. As a result, the following equations were established in the relation between micro-strain (ε) and dislocation density (ρ) for each case:
ρ [m−2] ≒ 1.5×1020 ε2 (Gaussian correction)
ρ [m−2] ≒ 1.9×1020 ε2 (Voigt correction)
