A crystal plasticity FEM study of through-thickness deformation and texture in a {112} <111> aluminium single crystal during accumulative roll-bonding

Hui Wang; Cheng Lu; Kiet Tieu; Guanyu Deng; Peitang Wei; Yu Liu

doi:10.1038/s41598-019-39039-y

A crystal plasticity FEM study of through-thickness deformation and texture in a {112} <111> aluminium single crystal during accumulative roll-bonding

Sci Rep. 2019 Mar 4;9(1):3401. doi: 10.1038/s41598-019-39039-y.

Authors

Hui Wang¹, Cheng Lu², Kiet Tieu¹, Guanyu Deng¹, Peitang Wei³, Yu Liu¹

Affiliations

¹ School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, New South Wales, 2522, Australia.
² School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, New South Wales, 2522, Australia. chenglu@uow.edu.au.
³ State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, China.

Abstract

In this study, a crystal plasticity finite element method (CPFEM) model was used to study the deformation behaviour in an aluminium single crystal (1 1 2)[1 1 -1] processed by accumulative roll-bonding (ARB) up to 9 cycles. The simulation followed the real ARB process based on the developed finite element model. The predicted through-thickness texture matches well with the experimental observations. The deformation behaviours, in terms of crystal rotation, shear strain and slip system activation, in the first and second cycles (conventional rolling) were unidirectional, but the deformation was altered after ARB was applied from the third cycle onwards. Such alteration was found to be caused by the thickness position change and deformation discontinuity at interfaces, which were investigated in detail. The role that interfaces play became dominant over thickness position change as increasing ARB cycles.