Development of Goss texture in Al-0.3% Cu annealed after heavy rolling

JOURNAL OF ALLOYS AND COMPOUNDS

卷:749

Article

Shuai, L. F.¹  Huang, T. L.¹  Wu, G. L.¹  Huang, X.^1,2  Mishin, O. V.² 

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China

[2] Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark

关键词: Aluminum alloys;    Cold rolling;    Annealing;    Recrystallization;    Goss texture;   

DOI  :  10.1016/j.jallcom.2018.03.187

来源: Elsevier

【 摘 要 】

The evolution of the microstructure and texture during annealing has been studied in the center layer of 95% cold rolled Al-0.3% Cu with a large initial grain size. The cold-rolled condition is characterized by a strong Brass texture component and a deformed microstructure comprising lamellar structures intersected by a large number of shear bands. Recrystallization and precipitation take place during annealing at 200 degrees C, and a strong Goss texture develops. In the beginning of recrystallization, Goss oriented grains nucleate preferentially at the shear bands. At a later stage of recrystallization, new Goss nuclei can appear in regions where lamellae of the dominant Brass component are interspersed with Goss-oriented sub-grains. When recrystallization is almost complete, recrystallized Goss-oriented grains grow into grains of other orientations, which results in a rapid increase in the average grain size of Goss-oriented grains and strengthening of the Goss texture. As a result, new low angle boundaries are formed between Goss-oriented grains in this strongly textured material. (C) 2018 Elsevier B.V. All rights reserved.

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