結晶粒境界を輪郭パターンとする塑性ひずみ測定法

概要

論文の詳細を見る
Under the assumption that deformation in a crystal grain is uniform, a method of determining plastic strain in a grain is presented. Information on grain deformation allows us to find the strain distribution of sheet metals. Two line elements, each of which binds two arbitrary points on a grain boundary, are taken as basic vectors before deformation. They change lengths and directions under the process of deformation. Their relationship bofore and after deformation determines the deformation gradient and strain in the grain. A tensile specimen of sheet steel is used as the sample of strain measurement. It is found that uniform deformation is not guaranteed in a grain. Even if two grains are in contact with each other, the average strain in each grain is different. Therefore, in order to determine the macroscopic distribution of deformation, we have to average grain strains in some area.
一般社団法人日本機械学会の論文
1990-01-25