アルミニウム合金冷間圧延材の塑性異方性について

抄録

The relation between the X-ray intensity of rolling textures and anisotropic intensity was for 5052 sheets. The tensile test was also made on the specimens cut off at various inclinations to the rolling direction. The necking angle and the shear stress were analyzed on the basis of Hill's theory. A linear relation lies between the rolling reduction and the X-ray intensity of the preferred orientation in the rolling textures. The anisotropic intensity can be qualititatively explained to some extent from the (111) pole figure. The necking angle β in the tensile test changes with the angle to the rolling direction and takes either the maximum or minimum values at θ=45° with accordance to the change in rolling direction. The shear stress changes in the reverse phase of the β-θ curve. Hill's theory is substantially applicable to analysing the necking angle but not to analysing the shear stress.