加工硬化の方向性(第1報) : 引張り応力により塑性変形した材料の引張り応力に対する方向性

概要

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The mechanical properties of metals overstrained, for instance the yield stresses and the macroscopic stress-strain relations of rolled sheets, vary with directions. In R. Hill's theory on this matter, the internal stresses which result directly from the differential orientations of the grains were neglected. But, in pactice, the metals are often used in the work-hardened states without any heat treatment. The author performed the experimental studies on anisotropy produced by plastic deformation. At first, he obtained the tensile stress-strain curves of the specimens cut out in various orientations from the metal plate which had been over-strained by tension. And so he found the three principal factors which governed anisotropy produced by plastic deformation, and made the qualitative explanation of them.
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