抄録
The plastic strain ratio R of single crystals of low carbon steel has been determined by a method of tensile test. From consideration of the deformation due to slip, R-value can be described as R=tan2θ, where θ is the angle between the thickness direction and the projection of operative slip direction onto a plane which is perpendicular to the axis of specimen. R-value obtained from the tensile test and that calculated from the above equation showed a considerably good agreement. Calculation has also been made on the plastic strain ratio of some single crystal specimens, the surface of which is parallel to (100), (110), (111) and (112) planes, respectively.
