Some Consideration on Brittle Transition Using X-ray

Abstract

Using X-ray, measurement of the degree of plastic deformation about charpy impact tention tested specimen were made, from the point of view that the difference of the values of absorbed energy on brittle transition curve must be due to the difference of mechanism of plastic deformation, hence the energy for it, when the specimens were fractured at various temperature.
Just the side of fractured were exposed by X-ray beam, monochromated with LiF crystal, and back-reflected Debye rings from (310), (220), and (211) planes were recorded on rotating films, whilst same rings from fractured surface, on startic films.
Then the broadening of Debye rings were measured using microphotometer.
The half peak maximum were plotted against fractured temperature. Moreover, Debye rings on cylin-films were taken, and the half peak maximum of them were plotted against Bragg angle. drical Thus, consideration were made about these results.