Quantifying texture evolution during hot rolling of AZ31 Twin Roll Cast strip

17th International Conference on Textures of Materials

材料科学;物理学

Gorelova, S.^1,2 ; Schaeben, H.^3

Leibniz-Institut für Polymerforschung Dresden E. V., Dresden, Germany^1

TU Bergakademie Freiberg, Institut of Metal Forming, Freiberg, Germany^2

TU Bergakademie Freiberg, Geophysics and Geoinformatics, Freiberg, Germany^3

关键词: Crystallographic orientations;    Intermediate annealings;    Multi-pass rolling;    Orientation density;    Rolling conditions;    Strength increments;    Texture evolutions;    Twin-roll cast alloys;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012003/pdf
DOI  :  10.1088/1757-899X/82/1/012003

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Multi-pass rolling experiments with an AZ31 Twin Roll Cast (TRC) alloy were performed on an industrial scaled four-high rolling mill. Within the rolling with an intermediate annealing the evolution of texture was investigated. To quantify the extent of preferred crystallographic orientation experimental X-ray pole figures were measured after different process steps and analyzed using the free and open Matlab toolbox MTEX for texture analysis. The development of the fiber texture was observed and analyzed in dependence on rolling conditions. In the initial state the specimen exhibits a texture composed of a weak basal texture and a cast texture with {0001}-planes oriented across the rolling direction. During the following rolling process a fiber texture was developed. The expected strength increment of the fiber texture was quantitatively confirmed in terms of volume portions of the orientation density function around the fiber and in terms of the canonical parameters of fitted pseudo Bingham distributions. On the results of this work a model for prediction of the texture evolution during the strip rolling of magnesium in the examined parameter range was developed.