Effect of cold rolling mode and annealing temperature on microstructure and texture evolution of Al-4Cu-0.73Mg alloy

doi:10.13251/j.issn.0254-6051.2021.09.010

Abstract

Abstract: Effects of parallel rolling (PR), cross rolling (CR) and annealing temperature on microstructure and texture evolution of the Al-4Cu-0.73Mg(wt%) alloy were investigated by means of mechanical properties test, X-ray diffraction(XRD) and electron backscatter diffraction(EBSD). The results show that after annealing at 100-300 ℃ for 1 h, the PR specimens show obvious copper{112}<111>, S{123}<634> and Brass{011}<211> textures, while the CR specimens exhibit strong Brass texture and H{011}<755> texture. When the annealing temperature exceeds 300 ℃, the deformation textures in the PR and CR specimens gradually transform into recrystallization textures along α fiber, which consist of P {011} <001>, L {011} <011>, E {111} < 110> and R {124} <211>. The grain size of PR and CR specimens first increase and then decrease with the increase of annealing temperature, and the largest grain size can be obtained after annealing at 350 ℃ for 1 h, which are about 8.2 μm and 11.5 μm, respectively. Both the PR and CR specimens without annealing show the highest hardness values of ~108 HV, which gradually decrease with the increase of annealing temperature and finally are stable at about 50 HV. Overall, the effect of rolling modes on specimen textures is greater than that on mechanical properties.

Key words: Al-4Cu-0.73Mg alloy, parallel rolling, cross rolling, texture, recrystallization

CLC Number:

TG146.2⁺1

Jiang Yingge, Huang Jiwu, Jiang Fuqing, Xu Chenglong. Effect of cold rolling mode and annealing temperature on microstructure and texture evolution of Al-4Cu-0.73Mg alloy[J]. Heat Treatment of Metals, 2021, 46(9): 58-64.

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