S0305-6-3 非比例負荷を受ける電着銅薄膜の粒子成長挙動([S0305-6]微視組織)

概要

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Grain growth behaviour in a copper foil was examined under nonproportional (out-of-phase) loading. First, custom-built testing equipment was installed in a closed-loop servohydraulic testing machine to generate nonproportional loading. Then, the grain growth density and grain growth direction under nonproportional loading were compared with those under proportional loading. Even when the normal and shearing stress magnitudes were the same, the grain growth density tended to be low with an increase in the phase shift between them. Grains tended to grow in various directions under nonproportional loading. The grain growth density under nonproportional loading was obtained using the equivalent shearing stress in Tresca theory and it agreed well with the test results under proportional loading. Therefore, the grain growth density is mainly dominated by the maximum shearing stress in the case of nonproportional loading as well as proportional loading.
2010-09-04