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Report No.
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${it In-situ}$ measurement of lattice strain under plastic deformation in Aluminum single crystal

Shiro, Ayumi; Shobu, Takahisa  ; Okada, Tatsuya*; Kawano, Tomoya*; Bunya, Hirotomo*

Aluminum single crystals deformed along the $$<$$111$$>$$ direction exhibit a macroscopically uniform multiple-slip without deformation bands. In a previous study, it was found that the residual strain of Al single crystal deformed to a tensile strain of 8% to the $$<$$111$$>$$ direction is very small. In this study, in order to clarify the strain distribution under tensile deformation, we carried out the ${it in-situ}$ measurement using 2-dimensional detector. As a result, it was found as follows: (1) The width of diffraction spots were broadening as a plastic deformation was large. (2) Three subcrystals existed in the aluminum single crystal, and each subcrystal has different strain. (3) The relationship between the width of diffraction spot and formation behavior of the internal dislocation substructure existed.

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