Textures in steel sheets

Abstract

Steel sheets frequently exhibit pronounced textures influencing the product properties by causing anisotropies. In the present paper a survey is given of the typical textures in steel sheets in the final and also in the intermediate stages of the manufacturing process. In order to quantify and characterize textures the method of ODF is used, which also allows a simple representation of the main texture features by plotting the pole density along texture fibres. For hot‐rolled strip the textures of mild unalloyed and high‐strength microalloyed steels are considered for different finish‐rolling temperatures including rolling in the γ/α dual phase region. Besides the textures in the middle‐section the surface textures are also dealt with. The cold‐rolling texture is investigated with regard to the influence of hot‐band texture and grain size for unalloyed mild deep‐drawing grades and IF‐steels. The recrystallization texture of different deep‐drawing qualities is presented together with results of the influence of N‐fixation on the texture determined r‐values.

Influence of V and Nb Micro‐Alloying on Direct Quenched and Tempered Ultra‐High Strength Steels

“…However, annealing after quenching seems to enhance those differences. As proposed by Kaijalainen et al rolling textures, which are dependent on the FRT are responsible for unfavorable bending properties . These preferred orientations cannot be eliminated by quenching or normalizing and thus can be an explanation for the remaining anisotropy.…”

Assessment of bias errors caused by texture and sampling methods in diffraction-based steel phase measurements

“…These specific orientations, or texture components, are expressed as a series of Euler angles or ( hkl ) [ uvw ] pairs and often have a shorthand name associated with them. Texture components known to occur in steels are described by Bleck et al (1991), Kestens & Jonas (2005) and Jonas et al (2006). These include texture components generated during hot rolling and recrystallization of the fully austenitic microstructure, transformation of the austenite phase to the ferrite phase upon cooling, and cold rolling of the ferrite phase.…”

“…Annotations above the plot show the phase (A -austenite, F -ferrite) and hkl plane of each diffraction peak. Table 1 Orientations of typical texture components found in ferrite (F) and austenite (A) phases in steel, adapted from Bleck et al (1991), Jonas et al (2006) and Kestens & Jonas (2005), and the texture index for a half-width (HW) of 20 .…”

Crystallographic texture evolution in 1008 steel sheet during multi-axial tensile strain paths

“…The majority of the literature discusses the high strain increments relevant for rolling sheet material. Unfortunately existing [1][2][3][4][5][6] experimental data on the texture evolution along multiaxial strain states at intermediate strain increments ( ) relevant for forming are incomplete, so assessment of model accuracy is difficult in this regime.…”