Microstructural change of fatigue-tested F82H-BA07 Steel under multiaxial loadings

Ken-ichi Fukumoto

Presentation information

Oral presentation

V. Fusion Energy Engineering » 501-2 Fusion Reactor Material Science (Reactor and Blanket Materials, Irradiation Behavior)

[2O10-16] Fusion Reactor Materials (Reduced Activation Ferritic Steel, Beryllium Neutron Multiplier)

Thu. Sep 14, 2017 2:45 PM - 4:35 PM Room O (Seminar room 1- Frontier Research in Applied Sciences Building)

Chair:Ryuta Kasada (Kyoto Univ.)

2:45 PM - 3:00 PM

[2O10] Microstructural change of fatigue-tested F82H-BA07 Steel under multiaxial loadings

*Ken-ichi Fukumoto¹, Takamoto Itoh², Hiroyasu Tanigawa³, Hideo Sakasegawa³, Takashi Onitsuka¹ (1. RINE/Univ. of Fukui, 2. Ritsumeikan Univ., 3. QST)

Keywords:low-activated ferrite steel, fatigue behavior, TEM observation

This study focus on the microstructure of fatigue deformation under non-proportional multiaxial loading of the F82H steel. Plate specimens were cut out from fatigue tested specimens at De_eq=0.5% and De_eq=1.0% under multiaxial loadings. TEM samples were picked up from the plate specimen perpendicular to the axial direction of cylindrical fatigue specimens using a TEM-FIB technique.