1984 Volume 70 Issue 16 Pages 2294-2300
Two-dimensional quantitative quick analyzing method has been expected for the accurate evaluation of the segregation and inclusions in steel.
A new electron probe large area mapping analyzer("Macro analyzer"), that permits rapid and accurate two-dimensional analysis of elements even for the large sample(300×100 mm) with the undulation inherent to it, has been developed. This has been achieved by the development of a long-focus electron optics, a broad-view X-ray spectrometer, and a high-speed sample stage. This system was automatically operated with a control computer and at the same time the obtained two-dimensional data were processed with a data processing computer and shown on a color graphic display. By the development of this system, a new quantitative evaluation method of segregation and inclusions in continuously cast slabs and steel materials was established.
In this paper, as an example of the use of this system, quantitative characterization of small segregation spots in a lamellartear resistant steel was studied.
