采用拉伸、杯突实验结合DSC分析系统研究了Cu含量对汽车车身用Al-1.0Mg-1.0Si-(0.1～0.7)Cu-0.6Mn合金T4态薄板各类成形性指标及模拟烤漆处理后性能变化的影响规律.结果表明:随着Cu含量增加,T4态合金板材的强度单调增大,n值呈现出略有增大的趋势,延伸率、r值变化规律不明显,IE值单调下降,板材的拉胀成形性能变差;随着Cu含量增加,T4态合金板材烤漆前后的强度均单调增大,但合金板材模拟烤漆后表现出烤漆软化现象,且其软化量随Cu含量增加而逐渐增大,说明Cu含量增加不利于铝板烘烤硬化性能的发挥.
参考文献
| [1] | Miller W S;Zhuang L;Bottema J et al.Recent development in aluminium alloys for the automotive industry[J].Materials Science and Engineering A,2000,280(01):37-49. |
| [2] | Shahrzad Esmaeili;David J. Lloyd .Characterization of the evolution of the volume fraction of precipitates-in aged AlMgSiCu alloys using DSC technique[J].Materials Characterization,2005(4/5):307-319. |
| [3] | R. Lapovok;I. Timokhina;P. W. J. McKenzie;R. O'Donnell .Processing and properties of ultrafine-grain aluminium alloy 6111 sheet[J].Journal of Materials Processing Technology,2008(1-3):441-450. |
| [4] | WANG Zhong-jin,LI Yi,LIU Jian-guang,ZHANG Yi-he.Evaluation of forming limit in viscous pressure forming of automotive aluminum alloy 6k21-T4 sheet[J].中国有色金属学会会刊（英文版）,2007(06):1169-1174. |
| [5] | K. Mori;S. Maki;M. Ishiguro .Improvement of product strength and formability in stamping of Al-Mg-Si alloy sheets having bake hardenability by resistance heat and artificial aging treatments[J].International Journal of Machine Tools & Manufacture: Design, research and application,2006(15):1966-1971. |
| [6] | Burger G B;Gupta A K;Jeffrey P W et al.Microstructural control of aluminum sheet used in automotive applications[J].,1995,35(01):23-39. |
| [7] | M.A. Gaffar;A. Gaber;M.S. Mostafa .The effect of Cu addition on the thermoelectric power and electrical resistivity of Al-Mg-Si balanced alloy: A correlation study[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):274-282. |
| [8] | D. J. Chakrabarti;David E. Laughlin .Phase relations and precipitation in Al-Mg-Si alloys with Cu additions[J].Progress in materials science,2004(3/4):389-410. |
| [9] | J. Buha;R.N. Lumley;A.G. Crosky .Secondary precipitation in an Al-Mg-Si-Cu alloy[J].Acta materialia,2007(9):3015-3024. |
| [10] | M. MURAYAMA;K. HONO;W.F. MIAO .The Effect of Cu Additions on the Precipitation Kinetics in an Al-Mg-Si Alloy with Excess Si[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2001(2):239-246. |
| [11] | Matsuda K;Fujii K;Uetani Y;Sato T;Kamio A;Ikeno S;Naoi T .Crystal structure of the beta " phase in Al-1.0mass%Mg sub 2 Si-0.4mass%Si alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(1/2):232-237. |
| [12] | Quainoo G K;Yannacopoulos S .The effect of cold work on the precipitation kinetics of AA6111 aluminium[J].Journal of Materials Science,2004,39:6495-6502. |
| [13] | Yucel Birol .Pre-Straining to Improve the Bake Hardening Response of a Twin-Roll Cast Al-Mg-Si Alloy[J].Scripta materialia,2005(3):169-173. |
| [14] | Yassar RS;Field DP;Weiland H .The effect of predeformation on the beta '' and beta ' precipitates and the role of Q ' phase in an Al-Mg-Si alloy; AA6022[J].Scripta materialia,2005(3):299-303. |
| [15] | Yucel B;Miroslav K .The interaction of natural ageing with straining in a twin-roll cast AlMgSi automotive sheet[J].Scripta Materialia,2006,55(07):625-628. |
| [16] | 宋文举,田妮,权力伟,赵刚,刘春明,左良.Al-1.3 Si-1.2Mg-0.7Mn-0.6Cu铝合金的回归处理[J].轻合金加工技术,2006(05):44-47,53. |
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