J041025 純チタン結晶粒内マイクロピラーの単軸圧縮変形の結晶方位依存性に関する基礎的検討

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タイトル別名
  • J041025 Basic Study on Crystal Orientation Dependency of Uniaxial Compressive Deformation of Micropillar Fabricated in Grain of Pure Titanium

抄録

Titanium is one of materials with hexagonal close-packed structure, in which mechanical twinning often occurs and the plastic behavior becomes rather complicated. In recent years, the compression testing technique of a micropillar fablicated in a grain of metallic material has been developed for the purpose to study the deformation properties of a single crystal structure in a polycrystalline aggregate. In the present study, micropillars with rectangular cross section were fablicated in grains of industrial pure titanium by Focused Ion Beam (FIB) technique. The micro-compression tests were then performed in order to investigate the compressive behavior of single crystal micropillars. It was found that the load-displacement relations obtained by compression tests varied according to the crystal orientation and dimensions of the micropillars. Several traces of mechanical twinning were found to appear on the side surfaces of micropillars after the compression test, when the compressive force was applied in <0001> direction of the titanium grains.

収録刊行物

  • 年次大会

    年次大会 2012 (0), _J041025-1-_J041025-3, 2012

    一般社団法人 日本機械学会

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