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Ti6Al4V ELI钛合金加热与保温过程的数值模拟研究
英文标题:Numerical simulation of heating and insulation process for Ti6Al4V ELI Ti alloy
作者:汪海波 杜予晅 唐晓东 刘广发 
单位:西部超导材料科技股份有限公司 西北工业大学 
关键词:Ti6Al4V ELI钛合金 锻造 加热 数值模拟 
分类号:TG166.5
出版年,卷(期):页码:2014,39(8):95-98
摘要:
采用Deform-3D软件建立了Ti6Al4V ELI钛合金的3D加热有限元模型。详细模拟了Ti6Al4V ELI钛合金在不同加热曲线下的温升过程,并通过热处理实验验证了所模拟加热时间的准确性。结果表明:采用分段加热的方式,可以明显缩短坯料在β相区的保温时间,而且坯料规格越大,优势就越明显。通过实验验证,对热处理后的坯料心部组织进行金相观察,所有的初生α相都已消失,并发生了β转变,且出现了明显的晶界,两相组织变成魏氏组织,说明坯料心部已经热透,证明所建立的模型可靠。
Based on the software Deform-3D, 3D finite element heating model of Ti6Al4V ELI Ti alloy was founded. The heating processes of Ti6Al4V ELI Ti alloy under different temperature curves were detailed simulated, and the simulated accuracy of heating time was verified by heat treatment experiments. The results show that the holding time of billet in the β-phase can significantly be shorten by segmented heating approach, and the greater the blank size is, the more obvious the advantages are. By experimental verification, the core microstructure of billet is done metallographic observation after heat treatment, it is found that all primary α-phase are all disappeared, and β-phase occurs by transforming. There are obvious boundary and two phase microstructure becomes widmanstatten one, which shows that the core microstructure of billet is heated thoroughly and proves that the established model is reliable.
基金项目:
国家自然科学基金资助项目(51171150);西部超导材料科技股份有限公司自主研发课题(541310)
作者简介:
汪海波(1982-),男,学士,助理工程师
参考文献:


[1]朱知寿,马少俊,王新南,等. TC4-DT损伤容限型钛合金疲劳裂纹扩展特性的研究[J]. 钛工业进展, 2005, 22(6):10-13.Zhu Z S,Ma S J,Wang X N,et al. Study on fatigue crack propagation rate of TC4-DT damage tolerance titanium alloy[J]. Titanium Industry Progress,2005, 22(6):10-13.
[2]Tamilselvi S, Raman V, Rajendran N. Corrosion behaviour of Ti-6Al-7Nb and Ti-6Al-4V ELI alloys in the simulated body fluid solution by electrochemical impedance spectroscopy[J]. Electrochimica Acta, 2006, 52(3): 839-846.
[3]Feng B X, Mao X N, Yang G J, et al. Residual stress field and thermal relaxation behavior of shot-peened TC4-DT titanium alloy[J]. Materials Science and Engineering: A, 2009, 512(1-2): 105-108.
[4]Lu W, Shi Y, Lei Y, et al. Effect of electron beam welding on the microstructures and mechanical properties of thick TC4-DT alloy[J]. Materials & Design, 2012, 34: 509-515.
[5]沙爱学,李兴无,曾卫东,等. 钛合金β区加热保温时间的研究[J]. 航空材料学报,2010,(4):8-11.Sha A X, Li X W,Zeng W D, et al. Study on holding time of β zone heating of titanium alloy[J]. Journal of Aeronautical Materials, 2010,(4):8-11.
[6]李辉. 损伤容限型TC4-DT钛合金疲劳裂纹扩展速率研究[D]. 西安:西北工业大学,2006.Li H. A Study of Fatigue Crack Growth Rate of TC4-DT Titanium Alloy with Damage Tolerance[D]. Xian: Northwestern Polytechnical University,2006.
[7]周伟,曲恒磊,赵永庆,等. 热处理对TC4合金组织与性能的影响[J]. 热加工工艺,2005,34(8): 26-27.Zhou W, Qu H L, Zhao Y Q, et al. Effect of heat treatment on microstructure and mechanical properties of TC4 alloy[J]. Hot Working Technology,2005,34(8): 26-27.
[8]王悔改,冷文才,李双晓,等. 热处理工艺对TC4钛合金组织和性能的影响[J]. 热加工工艺, 2011,40(10): 181-183.Wang H G, Leng W C, Li S X,et al. Effects of heat treatment process on microstructure and mechanical properties of TC4 alloy[J]. Hot Working Technology, 2011, 40(10): 181-183.
[9]聂蕾,李付国,方勇. TC4合金的新型本构关系[J]. 航空材料学报, 2001,(3): 13-18.Nie L,Li F G, Fang Y. New constitutive relationship for Ti-6Al-4V alloy[J]. Journal of Aeronautical Materials, 2001,(3): 13-18.
[10]王建斌,胡宗式,邵军,等. TC4合金棒材的纵向微观组织[J]. 中国有色金属学报,2010,20(S1): 780-783.Wang J B, Hu Z S, Shao J, et al. Longitudinal microstructures of Ti-6Al-4V alloy bars[J].The Chinese Journal of Nonferrous Metals,2010,20(S1): 780-783.

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