Stress-Strain Relations of Polycrystalline Metals : 3. Proportional Loadings of F.C.C. Metals

Abstract

The theoretical prediction of plastic stress-strain relations of face-centered-cubic polycrystals subjected to proportional loadings is discussed on the basis of K. B.W model. This theory is applied to predict the stress-strain curve of thin-walled aluminium cylinders subjected to internal pressure loading by using the experimental curve of simple tension. A good agreement between the theoretical and experimental results is obtained. Furthermore it is found that Taylor's prediction based on the ratio of the yielding stress of a polycrystal to that of a single crystal gives almost the same results as the K. B. W. model prediction.