回折X線プロフィルの積分幅による変形量と異方性の評価

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The analysis of X-ray diffraction profile can provide us with much useful information on crystalline structure, and so it has been used for the studies on metal behavior during plastic deformation, fatigue process, recovery process and so on. In the first part of this paper the amount of deformation, ε, and the flow stress, σ, given to the specimens of plain carbon steels (0.05 % to 0.50% carbon) are quantitatively related to the integral breadth, B, by using the yield stress (σ_Y) , the uniform elongation (ε_U), the integral breadth corresponding to the uniform elongation (B_U), and the integral breadth of each annealed specimen (B_0). The X-ray diffraction technique is believed useful to study the anisotropic deformation behaviors of pre-deformed polycrystalline metals, since some microscopic parameters involved in such phenomena can be detected by means of this method. The relationship between the anisotropic deformation properties induced in a pre-stretched steel sheet and the directional dependence of the breadth of X-ray diffraction lines is described in the latter part of this paper. The experimental results show that the diffraction profiles obtained with respect to the macroscopically active slip planes are relatively narrower than those with respect to the other planes. This phenomenon is interpreted due to the so-called latent hardening on non-active slip planes, since the directional dependence of their breadth is considered to represent the anisotropy of crystalline structures.
社団法人日本材料学会の論文
1975-01-15

回折X線プロフィルの積分幅による変形量と異方性の評価

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