7136铝合金带板挤压有限元模拟  

The finite element simulation of 7136 aluminum alloy sheet

作　　者：任大为 李明 刘杰 杨海琴 张淼 庄大勇 鲁丹 张雷 REN Dawei;LI Ming;LIU Jie;YANG Haiqin;ZHANG Miao;ZHUANG Dayong;LU Dan;ZHANG Lei(CSIC Longjiang GH Gas Turbine Co.,Ltd.,Harbin 150001,China)

机构地区：[1]龙江广瀚燃气轮机有限公司,黑龙江哈尔滨150001

出　　处：《轻合金加工技术》2023年第10期31-36,共6页Light Alloy Fabrication Technology

摘　　要：在变形温度为583 K~743 K和应变速率为0.001 s^(-1)~1 s^(-1)的条件下研究7136铝合金的高温变形行为。研究结果表明:随着变形温度的提高,7136铝合金的最大屈服应力逐渐降低,在低温和低应变的状态下容易出现不连续动态再结晶,而在高温和高应变的状态下更容易出现连续的动态再结晶。采用A.Zarei-Hamzalo等人提出完整的流变模型构建7136铝合金本构关系和绘制热加工图,同时观察压缩变形的微观组织,构建的本构关系被导入到Deform软件中,用于模拟7136铝合金带板挤压过程中应力场和温度场的变化,指导工业化大生产,节约生产成本和工艺研发成本。The high temperature deformation behavior of the 7136 aluminum alloy was studied in the temperature range of 583 K-743 K and under the strain rates of 0.001 s^(-1)- s^(-1).The results show that the maximum yield stress of 7136 aluminum alloy gradually de⁃creases with the increase of deformation temperature.Discontinuous dynamic recrystallization is more likely to occur at low temperatures and low strains,while the continuous dynamic re⁃crystallization is more likely to occur at high temperatures and high strains.The complete flow behavior model proposed by A.Zarei⁃Hamzalo[1]et al.was used to construct the 7136 aluminum alloy constitutive relationship and draw the hot⁃working maps,the microstructure of compression deformation was observed,and the constitutive equation was imported into the material library of the Deform software,which was used to simulate the changes of the stress field and temperature fields during the extrusion of the 7136 aluminum alloy sheet in order to guide industrial mass production and save production costs and process research and develop⁃ment costs.

关 键 词：7136铝合金 挤压成型 有限元模拟 本构方程 温度场 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]