2次元検出器を用いたニッケル基単結晶超合金のX線応力測定

  • 町屋 修太郎
    日本原子力研究開発機構量子ビーム応用研究部門中性子産業利用技術研究ユニット
  • 田中 啓介
    名城大学理工学部機械システム工学科
  • 秋庭 義明
    名古屋大学大学院工学研究科機械理工学専攻

書誌事項

タイトル別名
  • X-Ray Stress Measurement of Nickel-Base Single Crystal Superalloy Using Two-Dimensional PSPC
  • 2ジゲン ケンシュツキ オ モチイタ ニッケルキ タンケッショウ チョウゴウキン ノ Xセン オウリョク ソクテイ

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抄録

The stress in a single crystal of nickel-base superalloy with 72% volume fraction of γ'-phase was measured by the X-ray method. The specimen whose surface normal was parallel to [001] direction was oscillated around φ-axis during recording of the X-ray diffraction pattern with a two-dimensional position sensitive proportional counter (PSPC). The stress was determined from the measured strain using the multiple regression method and the two-tilt method. The uniaxial stress was applied along [100] direction and the stresses were measured with the X-ray methods. The stress along [100] direction, σ11, measured with the X-ray method increased proportionally to the applied uniaxial stress, and the measured stress was about 5% smaller than the applied stress. The other stress components, σ22 and σ12, did not change with the applied stress. With respect to the machined surface, the residual stress was a compression of about 700MPa on the surface and abruptly decreased to zero at about 15μm beneath the surface. The increase in the full-width at half maximum was observed within the depth of about 15μm from the machined surface.

収録刊行物

  • 材料

    材料 56 (7), 594-601, 2007

    公益社団法人 日本材料学会

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