Transactions of Materials and Heat Treatment

Title：Optimized design and numerical simulation of forming technology for deformed magnesium alloy workpiece

Authors： LI Xu-bin1 ZHANG Zhi-min1 DU Zhan-feng2 (1.College of Material Science and Engineering North University of China Taiyuan 030051 China 2.Xi'an Electronic Engineering Research Institute Xi'an 710100 China)

Unit：

KeyWords： magnesium alloy isothermal deformation diversion rigid-plastic finite element method numerical simulation

ClassificationCode：TG376

year,vol(issue):pagenumber：2007,32(2):130-133

Abstract：

Isothermal-extrusion process was used with the forming temperature of 350~360℃.According to the stress-strain data gaining from isothermal compression experiment,and using rigid-plastic finite element method,the magnesium alloy isothermal-extrusion forming was simulated. It emphatically discussed the deformation force and metal flowing law in the course of isothermal-extrusion deformation.According to the simulation result about stress field,strain field,velocity field and changed load and etc.,the deformed defects were predicted,which offered the reliable reference basis for isothermal extrusion deformation of this kind of working.The structure of quickly mould changing and local diversion method,etc.were used to extrude the magnesium alloy workpiece whose mechanics performance and the structure accuracy requirements were met.

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Reference：

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