Characterizing texture in polycrystalline materials by ultrasonic waves |
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| Authors: | SH Tang S Wu ST Tu M Kobayashi |
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| Institution: | aSchool of Mechanical and Power Engineering, East China University of Science and Technology, 130, Meilong Street, Shanghai 200237, PR China;bCollege of Information Science and Engineering, East China University of Science and Technology, 130, Meilong Road, Shanghai 200237, PR China;cDepartment of Mechanical Engineering, Kitami Institute of Technology, Koen-cho 165, Kitami, Hokkaido 090-8507, Japan |
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| Abstract: | A method for characterizing texture from measurements of ultrasonic wave velocities is proposed. In polycrystalline aggregates, ultrasonic wave velocities are strongly affected by orientation distribution coefficients (ODCs), which are usually used to describe the degree of preferred grain orientation in textured materials. In this work, velocities of longitudinal and transverse waves propagating into aluminum alloy 6061 were measured under pure shear, simple shear and uniaxial tension. From the measured ultrasonic wave velocities, the ODCs W400 and W420 were calculated to infer the deformation-induced texture. The predicted pole figures, obtained using ultrasonic velocities, were in good qualitative agreement with the finite element polycrystal model analyzed pole figures. |
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| Keywords: | Ultrasonic texture Orientation distribution coefficients Finite element analysis Pole figure |
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