Effect of the Cube Texture Component on the Earing Behavior of Rolled F.C.C. Metals

摘要

An application of texture simulation to the formability of rolled f.c.c. sheet is described. Control of the earing behavior of such sheet is crucial to the efficient utilization of material. Cold-rolled f.c.c. metals characteristically give ears at 45 sup 0 to the rolling direction but it is known that if a large cube component is present before the material is rolled, the severity of the earing is reduced. The cube component, (010)(001), by itself is known to give ears at 90 sup 0 to the rolling direction and could thus balance a 45 sup 0 earing tendency. The cube component is unstable to rolling deformation, however, and is generally not observed in heavily cold-rolled f.c.c. metals. Therefore, the challenge is to explain how a large cube component, present prior to rolling, can affect the earing behavior at large rolling reductions. Texture simulation shows that orientations near cube tend to rotate primarily about the rolling direction towards the Goss orientation, (110)(001). It has been established both experimentally and theoretically that all orientations between the cube and the Goss positions give 90 sup 0 ears. Therefore, the effect of a prior cube component is due to the special behavior of orientations near cube under rolling deformation. (ERA citation 12:016283)