爆着オーステナイトステンレス・クラッド鋼のＸ線残留応力測定

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タイトル別名
  • X-Ray Measurement of Residual Stress in Explosive Austenitic Stainless Clad Steel
  • バクチャク オーステナイト ステンレス クラッド コウ ノ Xセン ザンリュウ

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In the previous paper, the applicability of the X-ray stress measurement for austenitic steel was examined on cold-rolled austenitic stainless steel plate, and as a result, the constant ψ method with the γ(311) diffraction of Cr Kβ radiation has been recommended. In this paper, the X-ray measurement based on the above results has been applied to the analysis of residual stress in an explosive austenitic stainless clad steel.<br>The results are summarized as follows:<br>(1) The error in the stress measurement is caused by various factors such as the constant K(-36.14±7.03kg/mm2/deg) used in the stress calculation, the scatter of the gradient in 2θ-sin2ψ diagram due to the statistical fluctuation of X-ray, and the broadening of half-value breadth as well as the superposition of diffraction intensity curves from γ(311) CrKβ and α(211) CrKα diffractions in the wavy bonded interface. However, the resultant stress patterns exhibit the next features.<br>(2) The biaxial residual stresses acting in perpendicular to each other show much the same patterns independently of explosive direction, being tensile in the surface layer of the stainless steel, highly tensile in the bonded zone, and compressive in the mild steel. These characteristics of the residual stress distributions can be roughly related to the peculiar mechanism of explosive bonding.<br>(3) The distributions of texture, microhardness and martensite in the cladding metal have peculiarities, and the microhardness and martensite distributions correspond with the plastic flow caused by the cladding.

収録刊行物

  • 材料

    材料 25 (268), 13-19, 1976

    公益社団法人 日本材料学会

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