2524铝合金的蠕变时效行为及本构方程
Creep Ageing Behavior and Constitutive Equation of 2524 Aluminum Alloy
摘 要
通过在电子蠕变试验机上进行蠕变时效试验, 研究了2524铝合金在时效温度为453～473 K、试验应力为140～210 MPa条件下的蠕变时效行为; 采用包含双曲正弦函数的方程, 通过对试验数据的线性回归分析, 建立了2524铝合金稳态蠕变速率与试验应力及时效温度之间的关联本构模型。结果表明: 随着试验应力增大和时效温度升高, 2524铝合金的稳态蠕变速率增大, 且蠕变曲线在第二阶段持续的时间缩短; 依据本构方程计算出该铝合金在各条件下的稳态蠕变速率的数值和试验值的平均相对误差为6.9%, 该本构方程可为2524铝合金蠕变时效成形工艺的制定提供依据。
蠕变时效
稳态蠕变速率
本构方程
2524 aluminum alloy
creep ageing
steady creep strain rate
constitutive equation
Abstract
The creep ageing behavior of 2524 aluminum alloy was studied at ageing temperature range from 453 K to 473 K and stress range from 140 MPa to 210 MPa using electronic creep testing machine.By adopting the equations including hyperbolic sine function and by linear regression analysis of experimental data, the constitutive relationship among steady creep strain rate, tested stress and ageing temperature of 2524 aluminum alloy was obtained. The results show that steady creep rate increased with the increase of tested stress and ageing temperature, and the second step in creep curves became short. The relative error of steady creep strain rate between theoretical value computed by the constitutive equation and actual value was only 6.9%, and the constitutive equation could provide theoretical basis for formulating creep ageing forming processing of 2524 aluminum alloy.
中图分类号 TG146.4
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金重点资助项目(2010CB731702)
收稿日期 2012/4/29
修改稿日期 2013/3/14
网络出版日期
作者单位点击查看
备注湛利华(1976-), 女, 湖南常德人, 教授, 博士。
引用该论文: ZHAN Li-hua,LI Jie,HUANG Ming-hui. Creep Ageing Behavior and Constitutive Equation of 2524 Aluminum Alloy[J]. Materials for mechancial engineering, 2013, 37(5): 92～96
湛利华,李杰,黄明辉. 2524铝合金的蠕变时效行为及本构方程[J]. 机械工程材料, 2013, 37(5): 92～96
被引情况:
【1】陈灿龙,李建亮,孔见, "6N01铝合金中厚板三点弯曲变形行为的数值模拟",机械工程材料 40, 59-64(2016)
【2】李红斌,田伟,郑明月,徐树成, "基于高速等温压缩试验构建普碳钢考虑温度弹跳的热变形本构方程",机械工程材料 38, 102-105(2014)
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【2】HOLMAN M C. Autoclave age forming large aluminum aircraft panels[J].Journal of Mechanical Working Technology, 1989, 20: 477-488.
【3】MANABU B, TAKEH IKO E. New aspects of development of high strength aluminum alloys for aerospace applications[J].Mater Science and Engineering A, 2000, 285(1/2): 62-68.
【4】STARKE E A, JR STALEY J T. Application of modern aluminum alloys to aircraft[J].Prog Aerosp Sci, 1996, 32( 2/3): 131-172.
【5】WARNER T. Recently-developed aluminum solutions for aerospace applications[J].Materials Science Forum, 2006, 519/521(2): 1271-1278.
【6】刘兵, 彭超群, 王日初, 等. 大飞机用铝合金的研究现状及展望[J].中国有色金属学报, 2010, 20(9): 1705-1715.
【7】宴井利, 孙扬善, 薛烽, 等.纯Mg的蠕变行为研究[J].金属学报, 2008, 44(11): 1354-1359.
【8】SPIGARELLI S, EVANGELISTA E, CUCCHIERI S. Analysis of the creep response of an Al-17Si-4Cu-0.55Mg alloy[J] Materials Science and Engineering A, 2004, 387/389: 702-705.
【9】齐义辉, 郭建亭, 崔传勇.NiAl-Cr(Zr)金属间化合物合金的高温蠕变[J].金属学报, 2001, 37: 957-960.
【10】GB/T 2039—1997 金属拉伸蠕变及持久试验方法[S].
【11】杜晓东.锆对输电铝合金蠕变行为的影响[J].机械工程材料, 1997, 21(5): 28-29.
【12】刘宇慧, 石志强, 李世春.轧态Zn-5Al-RE 合金的超塑性研究[J] .机械工程材料, 2004, 28(5): 11-14.
【13】DIERINGA H, HUANG Y, MAIER P. Tensile and compressive creep behaviour of Al2O3 short fiber reinforced magnesium alloy AE42[J]. Mater Sci Eng A, 2005, 410/411: 85-88.
【14】ARUNZCHALESWARAN A, PEREIRA I M, DIERINGA H, et al. Creep behavior of AE42 based hybrid composites[J].Mater Sci Eng A, 2007, 460/461: 268-276.
【15】LUTHY H, MILLER A K, SHERBY O D. The stress and temperature dependence of steady state flow at intermediate temperature for polycrystalline aluminum[J].Acta Metall, 1980, 28(2): 169-178.
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