多重結晶金属の弾性異方性とX線応力測定値の相関性(二相合金の変形挙動について)

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It is well known that the constituent crystals of polycrystalline metals are anisotropic in the elastic and plastic deformation, on which various theories have higherto been proposed. Recently. some studies on the relation between the practical deformation behaviour of engineering materials and these theoretical models have been attempted. From this point of view, the authors have carried out their analytical investigations for the purpose of elucidating the deformation behaviour of the polycrystalline metals. and measured the X-ray elastic constants and changes in the integral breadth of carbon steels. copper and alluminium. There are practically, on the other hand, metallic materials of two phase alloys. such as carbon steels, α+β brasses, Al-Si alloys and titanium alloys. These alloys contain. however, pearlite in the case of carbon steel, the second phase that has different crystal structure, physical or mechanical properties as compared with the matrix phase. Consequently. it seems that the deformation behaviour of each crystal is closely related to the deformation mechanism of metallic materials which is too complicated to be thoroughly understood. For clarifying the strength of materials, it is necessary first to investigate how the second phase will affect the first during the deformation, and then to measure the elastic constants of each phase. The authors carried out a series of experiments using several kinds of two phase alloys for industrial use in order to clarify the essentials of the above-mentioned mechanism of deformation. In this paper, the results of the following experiments are reported. First the elastic constants of annealed 7-3 brass. 6-4 brass and Al-Si alloys were measured by using various kinds of X-rays. and then they were compared with the analytical results based on the elastic anisotropy of single crystals in connection with the mechanism of elastic deformation.
1970-12-15

多重結晶金属の弾性異方性とX線応力測定値の相関性(二相合金の変形挙動について)

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