网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
5A06铝合金的高温变形行为分析及本构模型研究
英文标题:Hot deformation behavior analysis and constitutive model study of 5A06 aluminum alloy
作者:王敬  梁强  李永亮 
单位:重庆工商大学 
关键词:5A06铝合金 本构模型 热变形行为 变形温度 应变速率 
分类号:TG316
出版年,卷(期):页码:2020,45(8):204-211
摘要:
采用热模拟实验机对5A06铝合金进行了变形温度为300,350,400,450和500 ℃,应变速率为0.01,0.1,1和10 s-1 不同热变形条件下的等温压缩实验,分析了变形温度和应变速率对5A06铝合金热变形行为的影响,基于实验数据建立了5A06铝合金的Johnson Cook初始本构模型,并在此模型基础上进行了修正。研究结果表明:5A06铝合金热压缩时的热变形应力与变形温度、应变及应变速率均有关,热变形应力随着应变的增大先快速增大,然后逐步减小直至稳定,随变形温度的升高而降低,随应变速率的增大而增大;与Johnson Cook初始本构模型相比,修正后的本构模型具有更高的预测精度,更能准确地表达5A06铝合金热变形应力与热变形条件之间的关系。
The isothermal compression tests of 5A06 aluminum alloy under the deformation temperatures of 300, 350, 400, 450, 500 ℃ and the strain rates of 0.01,0.1,1,10 s-1 were conducted by the thermal simulation test machine, and the influences of deformation temperature and strain rate on the hot deformation behavior of 5A06 aluminum alloy were analyzed. Then, the Johnson Cook initial constitutive model of 5A06 aluminum alloy was established based on the experimental data, and the model was modified. The results show that the hot deformation stress of 5A06 aluminum alloy during hot compression is related to the deformation temperature, strain and strain rate. With the increasing of strain, the hot deformation stress first increases rapidly, and then decreases gradually until it is stable, it decreases with the increasing of deformation temperature and increases with the increasing of strain rate. Compared with Johnson Cook initial constitutive model, the modified constitutive model has higher prediction precision, the relationship between hot deformation stress and hot deformation conditions of 5A06 aluminum alloy is expressed more accurately.
基金项目:
重庆市技术创新与应用发展重点项目(cstc2019jscx-fxyd0317);重庆工商大学校级项目(950318062)
作者简介:
王敬(1983-),女,博士,副教授,E-mail:wangjing-0113@163.com
参考文献:
[1]刘莉.5A06铝合金复杂应力状态下的变形行为和组织演变[D].哈尔滨:哈尔滨工业大学,2014.
Liu L.The Deformation Behavior and Microstructure Evolution of 5A06 Aluminum Alloy under Complex Stress Conditions[D]. Harbin: Harbin Institute of Technology,2014.
[2]吴懿娟,晁代义,姜建堂.形变热处理对铝合金晶粒尺寸的影响[J].热处理技术与装备,2016,37(5):60-64.
Wu Y J, Chao D Y, Jiang J T. The effect of thermo-mechanical treatment on grain size of aluminum alloy[J]. Heat Treatment Technology and Equipment,2016,37(5):60-64.
[3]李念奎,凌杲.铝合金材料及其热处理技术[M].北京:冶金工业出版社,2012.
Li N K,Ling G. Aluminum Alloy Material and Its Heat Treatment Technology[M].Beijing: Metallurgical Industry Press,2012.
[4]Zener C, Hollomon J H. Effect of strain rate upon plastic flow of steel[J]. Journal of Applied Physics, 1944, 15(1):22-32.
[5]Johnson G R, Cook W H. A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures [J]. Engineering Fracture Mechanics, 1983, 21: 541-547.
[6]Zerilli F J, Armstrong R W. Dislocation-mechanics based constitutive relations for material dynamics calculations[J]. Journal of Applied Physics, 1987, 61(5):1816-1825.
[7]刘康宁,郎利辉,续秋玉.5A06铝合金板材热态本构模型及韧性断裂准则[J].西南交通大学学报,2018,53(1):214-218.
Liu K N, Lang L H, Xu Q Y. Modified constitutive model and ductile fracture criterion for 5A06 Al-alloy sheets at elevated temperatures[J]. Journal of Southwest Jiaotong University,2018,53(1):214-218.
[8]石婵. 5A06铝合金板材温成形本构及损伤研究[D].武汉:华中科技大学,2019.
Shi C. Study on Warm Forming Constitutive Equation and Damage of 5A06 Aluminum Alloy Sheet[D]. Wuhan: Huazhong University of Science & Technology, 2019.
[9]王战锋,张辉,张昊,等.喷射沉积5A06铝合金热压缩变形的流变应力行为[J].中国有色金属学报,2006, 16(11):1938-1944.
Wang Z F, Zhang H, Zhang H, et al. Flow stress behaviors of spray-deposited 5A06 aluminum alloy under hot compression deformation[J]. The Chinese Journal of Nonferrous Metals,2006, 16(11):1938-1944.
[10]郎利辉,许爱军,李涛,等.基于单向拉伸的防锈铝合金温热力学性能研究[J].航空材料学报,2012,32(1):15-19.
Lang L H,Xu A J,Li T, et al. Research on warm and hot mechanical property of corrosion-resisting aluminum alloy sheet based on uniaxial tensile test[J]. Journal of Aeronautical Materials, 2012,32(1):15-19.
[11]崔忠圻,覃耀春.金属学与与热处理[M].北京:机械工业出版社,2011.
Cui Z Z, Qin Y C. Metallurgy and Heat Treatment [M]. Beijing: China Machine Press,2011.
[12]Sun Z C, Wu H L, Cao J, et al. Modeling of continuous dynamic recrystallization of Al-Zn-Cu-Mg alloy during hot deformation based on the internal-state-variable (ISV) method[J]. International Journal of Plasticity, 2018, 106: 73-87.
[13]Li P W, Li H Z, Huang L, et al. Characterization of hot deformation behavior of AA2014 forging aluminum alloy using processing map [J]. Transactions of Nonferrous Metals Society of China, 2017,27(8):1677-1688.
[14]周峰,王克鲁,鲁世强,等.基于应变补偿的含稀土Ti_2AlNb基合金高温本构模型[J].稀有金属,2019,43(3):239-246.
Zhou F, Wang K L, Lu S Q, et al. High temperature constitutive model of rare earth Ti_2AlNb based alloy based on strain compensation[J]. Chinese Journal of Rare Metals, 2019, 43(3):239-246.
服务与反馈:
本网站尚未开通全文下载服务】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管 北京机电研究所有限公司 中国机械工程学会塑性工程分会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9