3326 工業用純チタンのひずみ経路変化を伴う二軸圧縮塑性変形における力学的挙動(S18-2 結晶塑性解析,S18 材料の強度と組織)

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  • 3326 Mechanical Behavior of Industrial Pure Titanium during Biaxial Compressive Plastic Deformation with Strain Path Change

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The understanding of the multiaxial flow behavior of polycrystalline metals is important not only for the process planning but also for the quality assurance of metal working products. In the present study, the biaxial compression experiments with strain path change were performed on industrial pure titanium using a newly developed testing apparatus. The influences of strain path and abrupt path change upon the mechanical behavior were then investigated. The results show that both the strain level at path change and the directional relation between the sequential paths affect the stress-strain relation of the material. It is also found that the plastic anisotropy has influences on the mechanical behavior with regard to the strain histories.

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