Forming Limit Diagram Analysis Based On Crystal Plasticity for Magnesium Alloy Sheets
In the sheet metal forming industry,forming limit diagram (FLD) is a useful tool for quantifying metals formability.However,the experimental measurement of FLD is difficulty,time consuming and expensive process.It would be useful if FLD calculated with a theoretical model could replace experimental measurements.In this research,a rate independent crystal plasticity model is developed to analyze the plastic deformation of hexagonal close packed (HCP) materials by incorporating the crystallography of deformation twinning in plasticity model.The numerical simulations of FLD for AZ31 magnesium alloy are performed based on the crystal plasticity model incorporated within the Marciniak- Kuczynski (M-K) approach.The approach allows for the incorporation of initial texture,evolution of texture,and texture-induced anisotropy.The effects of mechanical twinning on plastic deformation and FLD behavior for AZ31 alloy are also incorporated.Finally,the calculation of the FLD for AZ31 alloy successfully predicts the experimental tendency that phenomenological plasticity model cannot reproduce.
Forming Limit Diagram Crystal Plasticity Twinning Texture
Weiqin Tang Dayong Li Yinghong Peng Shaorui Zhang
School of Mechanical Engineering,Shanghai Jiao Tong University,800 Dongchuan Road,Shanghai 200240,PR China
国际会议
沈阳
英文
1051-1057
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）