Study on Surface Asperity Flattening in Cold Quasi-Static Uniaxial Planar Compression by Crystal Plasticity Finite Element Method

被引:0
作者
Hejie Li
Zhengyi Jiang
Dongbin Wei
Jianzhong Xu
Xiaoming Zhang
Dianyao Gong
Jiangtao Han
机构
[1] University of Wollongong,School of Mechanical, Materials and Mechatronic Engineering
[2] University of Technology,Faculty of Engineering and Information Technology, School of Electrical, Mechanical and Mechatronic Systems
[3] Northeastern University,State Key Laboratory of Rolling and Automation
[4] University of Sciences and Technology Beijing,School of Materials Sciences and Engineering
来源
Tribology Letters | 2015年 / 58卷
关键词
Quasi-static; Surface asperity; Cold uniaxial planar compression (CUPC); Crystal plasticity finite element modelling; Texture;
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摘要
In order to study the surface asperity flattening in a quasi-static cold uniaxial planar compression, the experimental results of atomic force microscope and electron backscattered diffraction have been employed in a rate-dependent crystal plasticity model to analyze this process. The simulation results show a good agreement with the experimental results: in this quasi-static deformation process, lubrication can hinder the surface asperity flattening process even under very low deformation rate. However, due to the limitation of the model and some parameters, the simulation results cannot predict all the properties in detail such as S orientation {123} <634>, and the maximum stress in sample compressed without lubrication. In addition, the experimental results show, with an increase in gauged reduction, the development of Taylor factor, and CSL boundaries show certain tendencies. Under the same gauged reduction, friction can increase the Taylor factor and Σ = 7.
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