摘要: |
通过Gleeble-3800热模拟试验机对6005A铝合金在623~823K温度和0.01~10s-1应变速率下进行热压缩试验,研究了6005A铝合金热变形行为。基于试验真实应力应变数据,进行了温度修正和摩擦修正,建立了考虑应变补偿且能够准确描述6005A铝合金材料热变形过程中流变应力与应变、应变速率和变形温度之间关系的Arrhenius本构关系模型,相关系数R为0.9985315,平均相对误差AARE为2.56%。 |
关键词: 6005A铝合金;热变形行为;真应力-应变曲线;本构方程 |
基金项目:国防基础科研计划资助项目(JCKY2018204B034) |
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Research on Thermal Deformation Behavior of 6005A Aluminum Alloy Used in Aerospace |
Wang Shenglong1, Qin Zhonghuan1, Zhou Xiaojing1, Liu Jianfeng2, Zhang Haichao2, Dong Yang3, Guo Xiaolin1
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1. Beijing Hangxing Machinery Manufacture Co., Ltd., Beijing 100013;2. Shandong University, Jinan 250014;3. Shandong Yancon Light Alloy Co., Ltd., Zoucheng 273515
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Abstract: |
The thermal compression test of 6005A aluminum alloy at 623~823K and 0.01~10s-1 was carried out by Gleeble-3800 thermal simulation testing machine, and the thermal deformation behavior of 6005A aluminum alloy was studied. Based on the true stress and strain data of the experiment, temperature correction and friction correction were carried out, and the Arrhenius constitutive model of 6005A aluminum alloy considering strain compensation was established, which can accurately describe the relationship between flow stress and strain, strain rate and deformation temperature during thermal deformation of 6005A aluminum alloy. The correlation coefficient R is 0.9985315, and the average relative error AARE is 2.56%. |
Key words: 6005A aluminum alloy;thermal deformation behavior;true stress-strain curve;constitutive equation |