Influence of Crystallographic Texture on the Strength and Toughness of Control-rolled High Tensile Strength Steel

Abstract

The effect of crystallographic texture on the anisotropies of strength and toughness of the control-rolled high tensile steels was quantitatively investigated .The effect of the textures on the anisotro.bies of yield and tensile strees could be accurately evaluated with H osford and B ackofen's method, if fine de tails of textures were properly taken in to account.The anisotropies of toughness were found to be qualitatively related with the dis tribution of { 100} cleavage plane. 1 t was f urther fo und that among the main components of the textures of tlzese steels, {3 1J }<01J > orientations not only enhanced the difference in stmlgth between L (OO) and C(900) directions, bu t also reduced the toughness at 45° direction, whereas {332}< 113 > orientations gave rise to a weak anisotropy and better average strength and toughness .T hus, f urther im/Jrovemen t in strength and toughness might be eX/Jected,ij /Jreferential development of {332}< 113 > orientations was to be achieved .