- 著者
-
中井 善一
塩澤 大輝
松田 翔太
中尾 亮太
浅川 直也
菊池 将一
- 出版者
- 一般社団法人日本機械学会
- 雑誌
- 関西支部講演会講演論文集
- 巻号頁・発行日
- vol.2015, pp.86-89, 2015
The three dimensional grain mapping technique for polycrystalline material, called X-ray diffraction contrast tomography (DCT), was conducted in SPring-8 (Super Photon ring-8 GeV), which is the brightest synchrotron radiation facility in Japan, and the conditions of measurement and data processing procedure have been obtained. Developed technique was applied to a commercially pure iron, and an austenitic stainless steel. The shape and location of grain could be determined by DCT using the apparatus in a beam line of SPring-8. Total misorientation of an individual crystalographic plane of a specific grain during fatigue test of the steels were measured. In fatigue test of the stainless steel, thetotal misorientastion of {111} planes increased with number of cyccles. Among {111} planes, the amount of change depended on Schmid factor, i.e., the change was higher for planes with larger Schmid factor. For the commercially pure iron, the total misorientastion of {110} planes increased with number of cyccles. The amount of change, however, did not depend on Schmid factor because of pencile-glide. The effect of cross-slip should be considered