Abstract
To clarify the effect of texture on the toughness of irons and steels, mechanical behaviors of pure irons having a strong {100}‹011› texture component were investigated.
It is revealed that the texture has a notable influence on the Charpy impact properties; the stronger the {100} component parallel to the fracture surface, the higher the impact transition temperature. The ratio of unit crack path lc to grain size la in the textured sample is larger than the ratio of about 2 obtained in a previous paper. It can be concluded that the unit crack path is more reasonable than the grain size as a characteristic of the structure affecting on the toughness of irons. The difference of the fractographic appearance of unit crack path between the textured sample and the random one is discussed.
The elongation and the reduction in width show the planar anisotropy due to the preferred orientations, while the strength is not influenced by the texture under the experimental conditions of this study.
