肖罡,李落星,刘志文,叶拓

• 1:湖南大学汽车车身先进设计制造国家重点实验室
• 2:湖南大学机械与运载工程学院

摘要(Abstract)：

采用Gleeble-3500热模拟实验机,分析6013铝合金在变形温度613~773 K、应变速率10-3~10 s-1和工程变形量10%~60%条件下的平面热压缩变形流变应力演化规律,求解热变形本构方程,建立热加工图,探讨其热变形行为机理。结果表明,6013铝合金的流变软化机制以动态回复为主;采用包含关于变形温度函数的幂函数本构方程可较好的预测其流变行为,与实测值的平均相对误差仅为6.631%;确定了单道次大应变热轧成型最佳工艺参数区间:673 K

关键词(KeyWords)： 6013铝合金;平面热压缩;本构方程;热加工图

Abstract:

Keywords:

基金项目(Foundation): 国家“十二五”科技支撑计划(2011BAG03B02);; 国家自然科学基金(51075132);; 长沙市科技重大专项(K1204008-11-1);; 车身先进设计与制造国家重点实验室自主课题(61075005)

作者(Author): 肖罡,李落星,刘志文,叶拓

DOI: 10.13289/j.issn.1009-6264.2014.10.005

参考文献(References)：

• [1]Pourahmad P,Abbasi M.Materials flow and phase transformation in friction stir welding of Al6013/Mg[J].Transactions of Nonferrous Metals Society of China,2013,23(5):1253-1261.
• [2]Xu W L,Yue T M,Man H C,et al.Laser surface melting of aluminum alloy 6013 for improving pitting corrosion fatigue resistance[J].Surface and Coatings Technology,2006,200(16-17):5077-5086.
• [3]Abdala M R W S,Garcia de Blas J C,Barbosa C,et al.Thermoelectrical power analysis of precipitation in 6013 aluminum alloy[J].Materials Characterization,2008,59(3):271-277.
• [4]Taylor A S,Cizek P,Hodgson P D.Orientation dependence of the substructure characteristics in a Ni-30Fe austenitic model alloy deformed in hot plane strain compression[J].Acta Materialia,2012,60(4):1548-1569.
• [5]Gelin J C,Ghouati O,Shahani R.Modeling the plane strain compression test to obtain constitutive equations of aluminum alloys[J].International Journal of Mechanical Sciences,1994,36(9):773-796.
• [6]傅高升,陈贵清.3003铝合金热变形机制及其加工图[J].材料热处理学报,2013,34(2):114-119.FU Gao-sheng,CHEN Gui-qing.Hot deformation mechanism and processing maps of 3003 aluminum alloy[J].Transactions of Materials and Heat Treatment,2013,34(2):114-119.
• [7]张毅,刘平,田保红,等.基于热加工图的Cu-Ni-Si-P合金的高温热变形行为[J].材料热处理学报,2012,33(11):18-23.ZHANG Yi,LIU Ping,TIAN Bao-hong,et al.High temperature deformation behavior of Cu-Ni-Si-P alloy based on processing map[J].Transactions of Materials and Heat Treatment,2012,33(11):18-23.
• [8]Ahamed H,Senthilkumar V.Hot deformation behavior of mechanically alloyed Al6063/0.75Al2O3/0.75Y2O3 nano-composite—A study using constitutive modeling and processing map[J].Materials Science and Engineering A,2012,539:349-359.
• [9]Wu B,Li M Q,Ma D W.The flow behavior and constitutive equations in isothermal compression of 7050 aluminum alloy[J].Materials Science and Engineering A,2012,542:79-87.
• [10]Li H Z,Wang H J,Liang X P,et al.Hot deformation and processing map of 2519A aluminum alloy[J].Materials Science and Engineering A,2011,528:1548-1552.
• [11]Cepeda-Jiménez C M,Ruano O A,CarsíM,et al.Study of hot deformation of an Al-Cu-Mg alloy using processing maps and microstructural characterization[J].Materials Science and Engineering A,2012,552:530-539.
• [12]Shi C J,Mao W M,CHEN X G.Evolution of activation energy during hot deformation of AA7150 aluminum alloy[J].Materials Science and Engineering A,2013,571:83-91.
• [13]Luo J,Li M Q,Wu B.The correlation between flow behavior and microstructural evolution of 7050 aluminum alloy[J].Materials Science and Engineering A,2011,530:559-564.
• [14]Klepaczko J R.A practical stress-strain-strain rate-temperature constitutive relation of the power form[J].Journal of Mechanical Working Technology,1987,15(2):143-165.
• [15]朱振华.5A30铝合金高温压缩变形行为的研究[D].广州:广东工业大学,2011.ZHU Zhen-hua.Study on the compression deformation behaviors of 5A30 aluminum alloy at elevated temperature[D].Guangzhou:Guangdong University of Technology,2011.
• [16]Narayana M S V S,Nageswara R B,Kashyap B P.Instability criteria for hot deformation of materials[J].International Materials Reviews,2000,41:15-26.

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