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Deformation simulation of low-temperature high-speed extrusion for 6063 Al alloy 预览 被引量:1

Deformation simulation of low-temperature high-speed extrusion for 6063 A1 alloy
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摘要 The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine,and the forming of 6063 rod extrudate in low-temperature high-speed extrusion was simulated with extrusion ratio of 25 on the platform of DEFORM 2D successfully.From the compression experimental results,the flow stress model of this Al alloy is obtained which could be the constitutive equation in the simulation of low-temperature high-speed extrusion process.From the numerical simulation results,there is a higher strain concentration at the entrance of the die and the exit temperature reaches up to 522℃in low-temperature high-speed extrusion,which approaches to the quenching temperature of the 6063 Al alloy.The results show that the low-temperature high-speed extrusion method as a promsing one can reduce energy consumption effectively. The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine, and the forming of 6063 rod cxtrudate in low-temperature high-speed extrusion was simulated with extrusion ratio of 25 on the platform of DEFORM 2D successfully. From the compression experimental results, the flow stress model of this Al alloy is obtained which could be the constitutive equation in the simulation of low-temperature high-speed extrusion process. From the numerical simulation results, there is a higher strain concentration at the entrance of the die and the exit temperature reaches up to 522 ℃ in low-temperature high-speed extrusion, which approaches to the quenching temperature of the 6063 Al alloy. The results show that the low-temperature high-speed extrusion method as a promsing one can reduce energy consumption effectively.
作者 王孟君 何钊 武星星 李彩文 李光耀 WANG Meng-jun, HE Zhao, WU Xing-xing, LI Cai-wen, LI Guang-yao(1. Key Laboratory of Nonferrous Metal Materials Science and Engineering of Ministry of Education, Central South University, Changsha 410083, China; 2. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China)
出处 《中南大学学报:英文版》 SCIE EI CAS 2010年第5期 881-887,共7页 Journal of Central South University of Technology
基金 Project(2008A09030004) supported by the Major Science and Technology Project of Guangdong Province, China Project(30815009) supported by the Foundation of State Key Laboratory of Advanced Design and Manufacture for Vehicle Body
关键词 6063铝合金 高速挤出 变形模拟 低温 DEFORM 挤压方法 热压缩试验 热模拟机 6063 Al alloy hot deformation low-temperature high-speed extrusion constitutive equation numerical simulation
作者简介 WANG Meng-jun, PhD, Professor; Tel: +86-731 88836408; E-mail: wmj1965@yahoo.com.cn
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