X 線マイクロアナライザーによる鋼中マルテンサイト相の炭素分析法

概要

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Analytical conditions and data treatment method for determining carbon content in martensite in low carbon steel were investigated by using an X-ray microanalyzer. The results were summarized as follows : 1) The influence of polishing method on the X-ray intensity of C Kα line was eliminated by carefull buffing at finish polishing. In the analysis of martensite phase revealed by etching, abnormal high carbon value was obtained owing to the accelerated carbon deposition on the sample surface. The position of analyzed phase was required to be directed by microvickers indentions. 2) Almost of the coarse grained martensite phase in the steel with 0.1% C contained 0.4∿0.5% C. The phase containing 0.2∿0.3% C were characteristic in particle shape. 3) In the fine phases of which size were closely to the resolution limit of the used X-ray microanalyzer, the marking of objective phase and the stabilization of experimental equipment were particularly important. To correct the low analytical values which were induced by simultaneous analysis of the ferrite phase surrounding the objective martensite, a trial of data treatment was made.
社団法人日本鉄鋼協会の論文
1970-08-01