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| Al-6.2Zn-2.3Mg-2.3Cu合金热压缩变形的流变应力与组织演变 | |
| 引用本文： | 丛福官,赵刚,潘清林,尹志民,田妮,韩啸.Al-6.2Zn-2.3Mg-2.3Cu合金热压缩变形的流变应力与组织演变[J].轻合金加工技术,2011,39(11). |
| 作者姓名： | 丛福官 赵刚 潘清林 尹志民 田妮 韩啸 |
| 作者单位： | 1. 东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳110004;东北轻合金有限责任公司,黑龙江哈尔滨150060 2. 东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳,110004 3. 中南大学材料科学与工程学院,湖南长沙,410083 4. 东北轻合金有限责任公司,黑龙江哈尔滨,150060 |
| 摘 要： | 利用GPL-1500热模拟试验机对Al-6.2Zn-2.3Mg-2.3Cu合金在不同温度和不同应变速率条件下进行高温压缩试验,得到压缩真应力-应变曲线,并得出该合金的变形激活能和流变应力-应变方程。结果表明,变形温度和应变速率的变化对流变应力的影响明显,流变应力随变形温度的提高而显著降低,随应变速率的提高而增加。该合金高温变形过程的流变应力可用Zener-Hollomon参数(Z)描述;用双曲正弦函数修正的Arrhenius关系表示的流变应力方程为.ε·=1.282×100sin(0.010σ)]4.9145exp(-134157/RT)。 |
| 关 键 词： | 铝合金 热压缩变形 流变应力 显微组织 激活能 |
Flow stress and microstructure evolution of Al-6.2Zn-2.3Mg-2.3Cu alloy during hot compression deformation |
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| CONG Fu-guan,ZHAO Gang,PAN Qing-lin,YIN Zhi-min,HAN Ni,HAN Xiao.Flow stress and microstructure evolution of Al-6.2Zn-2.3Mg-2.3Cu alloy during hot compression deformation[J].Light Alloy Fabrication Technology,2011,39(11). | |
| Authors: | CONG Fu-guan ZHAO Gang PAN Qing-lin YIN Zhi-min HAN Ni HAN Xiao |
| Affiliation: | CONG Fu-guan1,2,ZHAO Gang1,PAN Qing-lin3,YIN Zhi-min3,TIAN Ni1,HAN Xiao2 (1.Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeast University,Shenyang 110004,China,2.Northeast Light Alloy Co.Ltd.,Harbin 150060,3.School of Materials Science and Engineering,Central South University,Changsha 410083,China.) |
| Abstract: | The high temperature compression tests of Al-6.2Zn-2.3Mg-2.3Cu aluminum alloy at different temperature and strain rate were carried out on GPL-1500 thermal simulation testing machine.The true stress-strain curves are obtained.The equation of deformation activation energy and flow stress-strain is worked out.The results show that the flow stress is influenced by deformation temperature and strain rate obviously;the flow stress decreases greatly with increasing of temperature and increases with increasing of ... |
| Keywords: | aluminum alloy hot compression deformation flow stress microstructure activation energy |
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