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Vol.34, No.9, 1145 ~ 1152, 1996

Title

Research Paper - Mechanical Behavior - : Calculation of Changes in Initial Textures of FCC Metals Under a Combined Load of Plane Strain Compression and Shear

오규환Kyu Hwan Oh, 한흥남Heung Nam Han, 최창희Chang Hee Choi, 이동녕Dong Nyung Lee

Abstract

The crystal rotation during deformation was calculated using the Taylor-Bishop-Hill full constraint model and the Renourd-Wintenberger second work minimization method. The changes in orientations of fcc metals with the strain ratio, x of shear strain to plane strain were calculated. The {4 4 11}<11 11 8> orientation component is calculated to be stable at x=0(plane strain), whereas the {1 0 0}<0 1 1> and {1 1 1}<1 1 2> components are stable at x= √2. The stable orientation map at x=1.5 was obtained in the whole orientation space, which shows that {1 1 1}<1 1 2> and {1 0 0}<0 1 1> are stable for initial orientations of γ-fiber and {100} fiber in the Euler space, respectively. The rotation behavior of crystal could be easily understood from the crystal rotation vector at the ψ₁=π/2 section of the Euler space including ε-fiber.

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