１８Ｃｒ‐８Ｎｉオーステナイト系ステンレス鋼Ｘ線応力測定データ処理法と精度について

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タイトル別名
  • On the Accuracy and the Method of Data Treatment for X-Ray Stress Measurement of 18Cr-8Ni Austenitic Stainless Steel
  • 18Cr 8Ni オーステナイトケイ ステンレス コウXセン オウリョク ソク

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抄録

The X-ray stress measurements were carried out on 18Cr-8Ni austenitic stainless steel specimens with different half-value breadths by the fixed ψ0 and ψ0 oscillation methods with CrKβ γ(311) diffraction. The peak position of the diffraction profile was determined by several methods, such as the half-value breadth method, the parabola fitting method and the center of gravity method by a computer and the accuracy of stress measurement was examined. The results obtained were as follows:<br>(1) It is not desirable to determine the peak position of diffraction profile by the center of gravity method, from a viewpoint of the accuracy of the computation.<br>(2) When the data of X-ray stress measurements obtained by the fixed ψ0 and ψ0 oscillation method were treated by using the half-value breadth or the parabola fitting method with corrections for background and an absorption factor, the error was as small as that of the graphic half-value breadth method.<br>(3) The corrected value of the absorption factor obtained from the normal distribution curves instead of the diffraction profies was not necessarily the same with the experimental value.

収録刊行物

  • 材料

    材料 29 (320), 428-433, 1980

    公益社団法人 日本材料学会

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