Finite Element Simulation of Crystal Plasticity for Texture Evolution of 2024 Aluminum Alloy during Rolling Process

QU Yang; ZHAO Qi; MA Dongwei

doi:10.15980/j.tzzz.T20240029

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Finite Element Simulation of Crystal Plasticity for Texture Evolution of 2024 Aluminum Alloy during Rolling Process
Vol. 45, Issue 3, Pages: 371-380(2025)
Received：23 January 2024，

Revised：06 March 2024，

Published：20 March 2025
DOI： 10.15980/j.tzzz.T20240029
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曲阳，赵齐，马东威. 晶体塑性有限元模拟2024铝合金轧制过程中织构演变［J］. 特种铸造及有色合金，2025，45（3）：371-380. DOI： 10.15980/j.tzzz.T20240029.

QU Y，ZHAO Q，MA D W. Finite element simulation of crystal plasticity for texture evolution of 2024 aluminum alloy during rolling process［J］. Special Casting & Nonferrous Alloys，2025，45（3）：371-380. DOI： 10.15980/j.tzzz.T20240029.

摘要

将晶体塑性理论与有限元软件ABAQUS相结合，采用CPFEM模拟了2024铝合金的5种单晶体与3种多晶体在轧制过程中不同压下量时的变形行为及织构演变趋势。结果表明，晶界与晶体内部均发生了不均匀变形，单晶体应力与累计剪切应变分布多成带状，但多晶体变形情况更加复杂。在不同压下量的轧制情况下，Cube取向与Goss取向单晶体不易发生累计剪切应变，晶粒取向也主要绕ND轴转动。在多晶体轧制过程中，Brass取向与Goss取向强织构中的Brass和Goss取向晶粒变形受到阻碍，极点分布更加均匀，Goss取向晶粒取向随着压下量的增加而逐渐向Brass取向转变，形成新的稳定织构。

Abstract

Based on the combination of crystal plasticity theory and the finite element software ABAQUS， the crystal plasticity finite element method （CPFEM） was used to simulate the deformation behavior and texture evolution trends of different single crystals and polycrystals of 2024 aluminum alloy during the rolling process at different reduction rates. The results reveal that uneven deformation occurrs in both grain boundaries and interior of the crystals， with stress and cumulative shear strain distribution mainly in bands in single crystals， while the deformation situation is more complex in polycrystals. Under different reduction rates during rolling process， single crystals with Cube and Goss orientations present less occurrence of cumulative shear strain， and grain orientation mainly rotates around the ND axis. During the rolling process of polycrystals， the deformation of grains with Brass and Goss orientations in the strong texture of Brass and Goss orientations is hindered， resulting in a more uniform distribution of pole figures. Additionally， Goss-oriented grains are gradually transformed towards the Brass-oriented ones with increasing reduction， forming a new stable texture.

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references

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