TY - JOUR
T1 - Deformation analysis of small size bend specimens by FEM calculation to estimate irradiation induced embrittlement of Mo and W
AU - Ueda, Kazukiyo
AU - Satou, Manabu
AU - Hasegawa, Akira
AU - Abe, Katsunori
N1 - Funding Information:
This work was supported by JUPITER (Japan–USA Program of Irradiation Test for Fusion Research) program, Collaboration Project for Fusion Materials between Monbusho of Japan (the Ministry of Education, Science, Culture and Sports) and Department of Energy of the United States.
PY - 1998/10
Y1 - 1998/10
N2 - Irradiation-induced embrittlement of Mo, W and their alloys was studied using a three-point bending test. The specimens were in shape of a small disk, identical to a TEM sample. The shift of ductile-brittle transition was observed. In this paper, the finite element method (FEM) was adopted for the analysis of deformation behavior of specimens in the bend test. Spatial distributions of stress and strain of bend specimen were obtained. The plastic deformation that mainly contributes to deformation of specimen was found to be restricted in a small area. Discussion of the size effect in bending deformation is presented. The small three-point bend method was useful to obtain information on mechanical properties of irradiated materials from the load-deflection curves, but in order to extract precise information, i.e. local stress and strain, FEM calculation concerning irradiation hardening should also be conducted simultaneously.
AB - Irradiation-induced embrittlement of Mo, W and their alloys was studied using a three-point bending test. The specimens were in shape of a small disk, identical to a TEM sample. The shift of ductile-brittle transition was observed. In this paper, the finite element method (FEM) was adopted for the analysis of deformation behavior of specimens in the bend test. Spatial distributions of stress and strain of bend specimen were obtained. The plastic deformation that mainly contributes to deformation of specimen was found to be restricted in a small area. Discussion of the size effect in bending deformation is presented. The small three-point bend method was useful to obtain information on mechanical properties of irradiated materials from the load-deflection curves, but in order to extract precise information, i.e. local stress and strain, FEM calculation concerning irradiation hardening should also be conducted simultaneously.
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U2 - 10.1016/S0022-3115(98)00307-9
DO - 10.1016/S0022-3115(98)00307-9
M3 - Article
AN - SCOPUS:0032180448
VL - 258-263
SP - 466
EP - 470
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - PART 1 A
ER -