402 微小圧痕形状を用いた純チタンの結晶学的方位評価(GS5(1) 実験,計測,モニタリング)

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  • 402 Evaluation of Crystal Orientation of Pure Titanium by Micro Indentation Shape

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A crystal orientation is one of important factors that affect the mechanical properties of single- and poly-crystalline metals in deformation processes. X-ray diffraction method and electron back scatter diffraction method are the typical ways to identify the crystal orientation of grains. Although these methods are possible to give accurate results, they need relatively expensive instruments and operation trainings. The present study aims to show the possibility to use an indentation shape made on a grain's surface for the identification of it's crystal orientation in polycrystalline titanium, which is hexagonal close-packed crystal structure. The strong correlation between the indention shape and the crystal orientation was found for the grain of pure titanium. The results also show the possibility to evaluate the direction of c-axis to a fairly good accuracy by introduced procedures.

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