1755 純チタン結晶粒表面における超微小硬度計の圧痕形状と結晶方位の関係に関する検討(S16-6 先進材料の創成・評価,S16 先進材料の強度・機能評価とメゾメカニックス)

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  • 1755 Relationship between Shape of Indentation by Nanomdenter and Crystal Orientation on Surfaces of Pure Titanium Grains

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The nanoindentation test has been recently developing to evaluate local mechanical properties in micro areas of various materials. In the present study, the nanoindentation tests were performed to grains in polycrystalline pure titanium, which is hexagonal close-packed crystal structure thus has less slip systems than the other crystalline structures. Then the relationship between the crystal orientation and the resultant indentation shape was investigated. The experimental results show the clear orientation dependence of the indentation shape. The obtained hardness value tends to increase when <0001> direction approaches to the direction normal to the sample surface.

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