Effect of friction in Dual Equal Channel Lateral Extrusion using finite element simulation

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Xiaoqi, Wang^1 ; Qingnan, Shi^1 ; Huarong, Qi^1 ; Zhaohua, Liu^1

Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China^1

关键词: Deformation behavior;    ECAP;    Finite element simulations;    Inhomogeneous deformation;    Lateral extrusion;    Severe plastic deformations;    Strain distributions;    Technological parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012044/pdf
DOI  :  10.1088/1757-899X/63/1/012044

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Dual equal channel lateral extrusion (DECLE) is a type of equal channel angular pressing which employs T-shaped die instead of L-shaped die. In the present work, deformation behavior in the DECLE process is analyzed by using DEFOEM-2D. The effect of friction between the die channels and the specimen on the effective strain distribution homogeneity and load were investigated. The friction induces inhomogeneous deformation in the head, top and bottom regions of the work piece. As friction increases, the top gap becomes smaller and the strain distribution becomes more homogenous, but the maximum load value increases. These results can serve as a design for reasonably technological parameters for DECLE processing.