Texture evaluation in ductile fracture process by neutron diffraction measurement

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Sunaga, H.^1 ; Takamura, M.^1 ; Ikeda, Y.^1 ; Otake, Y.^1 ; Hama, T.^2 ; Kumagai, M.^3 ; Suzuki, H.^4 ; Suzuki, S.^5

Center for Advanced Photonics, RIKEN, Wako, Saitama

351-0198, Japan^1

Research Reactor Institute, Kyoto University, Kumatori, Osaka

590-0494, Japan^2

Japan Faculty of Engineering, Tokyo City University, Setagaya, Tokyo

158-8857, Japan^3

Materials Sciences Research Center, Japan Atomic Energy Agency, Ibaraki, Tokai

319-1195, Japan^4

Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo

169-8555, Japan^5

关键词: Fracture process;    Microstructural aspects;    Neutron diffraction measurements;    Tensile specimens;    Texture evolutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032027/pdf
DOI  :  10.1088/1742-6596/734/3/032027

来源: IOP

【 摘 要 】

A neutron diffraction measurement was performed to reveal microstructural aspects of the ductile fracture in ferritic steel. The diffraction patterns were continuously measured at the center of the reduced area while a tensile specimen was loaded under tension until the end of the fracture process. The measurement results showed that the volume fraction of (110)-oriented grains increased when the texture evolved as a result of plastic deformation. But the mechanism of texture evolution may be changed during necking, decreasing an increase rate of the volume fraction.