Segregation evaluation method and segregation evaluation apparatus according to the emission spectral analysis

摘要

PROBLEM TO BE SOLVED: To provide a segregation evaluation method and a segregation evaluation device by emission spectrometric analysis capable of quickly and quantitatively evaluating the degree of segregation of C or a low concentration element of 0.01 wt% or less which is difficult to evaluate by an EPMA (Electron Probe Micro Analyzer) method.;SOLUTION: There is provided a method for quantitatively evaluating segregation by performing the concentration mapping analysis of a segregation element by the spark discharge emission spectrometric analysis of a region including a portion to be evaluated on segregation while allowing steel materials including the portion to be evaluated on segregation to continuously scan with respect to an electrode which generates spark discharge, in which scanning is repeatedly performed two or more times on the same scanning line, and at least one of discharge energy and a scanning speed is changed in preliminary scanning and main scanning for quantitative analysis. Thus, it is possible to quickly and quantitatively evaluate the degree of segregation of C or a low concentration element of 0.01 wt% or less which is difficult to evaluate by the EPMA method.;COPYRIGHT: (C)2014,JPO&INPIT