对两种61mm厚的7050-T7451铝合金板材进行对比分析,探讨工艺-组织-性能的关系.采用光学显微镜、扫描电镜进行组织观察,并进行室温拉伸、断裂韧性、剥落腐蚀等性能测试,实验表明:两种板材的综合性能均满足AMS 4050H标准的指标要求,但一种板材的强度、断裂韧度略低于另一种相同规格的板材,而剥落腐蚀性能略好.两种产品性能差异的主要原因在于,更系统的工艺控制使板材保持较好的组织均匀性、较小的再结晶比例,仅残留较少的小尺寸且均匀分布的Al7Cu2 Fe相,基本无Al2 CuMg相.
参考文献
| [1] | A. Heinz;A. Haszler;C. Keidel;S. Moldenhauer;R. Benedictus;W. S. Miller .Recent development in aluminium alloys for aerospace applications[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1):102-107. |
| [2] | D. Wang;Z.Y. Ma .Effect of pre-strain on microstructure and stress corrosion cracking of over-aged 7050 aluminum alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):445-450. |
| [3] | Robson JD. .Optimizing the homogenization of zirconium containing commercial aluminium alloys using a novel process model[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):219-229. |
| [4] | 宋丰轩,张新明,刘胜胆,白谭,韩念梅,谭季波.固溶制度对7050铝合金微观组织和腐蚀性能的影响[J].航空材料学报,2013(04):14-21. |
| [5] | 冯朝辉,王少华,臧金鑫,张显峰,孙刚,陆政,龚彭.新型Al-Zn-Mg-Cu合金双级时效制度研究[J].航空材料学报,2012(02):32-37. |
| [6] | JIN Y;LI C Z;YAN M G .Transmission electron microscopy on the microstructure of 7050 aluminium alloy in the T74 condition[J].Journal of Materials Science,1992,27(01):197-202. |
| [7] | HEINZ A;BURGER A;MULLER O.Improved damage tolerant thick plate for aerospace applications:laboratory studies and processing[A].Missouri,America,1997 |
| [8] | SAE AMS 4050H-2011.Aluminum Alloy,Plate,6.2Zn-2.3Cu-2.2Mg-0.12Zr (7050-T7451),Solution Heat Treated,Stress Relieved,and Overaged[S].SAE International,2011. |
| [9] | ASTM E399-1281.Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness Kic of Metallic Materials[S].ASTM International,2012. |
| [10] | ASTM E8/E8M-11.Standard Test Methods for Tension Testing of Metallic Materials[S].ASTM International,2011. |
| [11] | ASTM G34-01(Reapproved 2013).Standard Test Method for Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test)[S].ASTM International,2013. |
| [12] | ROBSONJ D;PRANGNELL P B .Predicting the recrystallised volume fraction in AA7050 hot rolled plate[J].Materials Science and Technology,2002,18(06):607-619. |
| [13] | FIELDINGP J.Introduction to Aircraft Design[M].Cambridge,UK:Cambridge University Press,1999 |
| [14] | Dumont D.;Deschamps A.;Brechet Y. .On the relationship between microstructure, strength and toughness in AA7050 aluminum alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):326-336. |
| [15] | M. J. Starink;S. C. Wang .A model for the yield strength of overaged Al-Zn-Mg-Cu alloys[J].Acta materialia,2003(17):5131-5150. |
| [16] | Feng Zhao;Lingyong Cao;Yujing Lang.The Influence of Inhomogeneous Deformation on the Microstructures and Properties of Thick-plate 7150 Alloy[J].Materials Science Forum,2013:250-254. |
| [17] | DESHPANDEN U;GOKHALE A M;DENZER D K et al.Relationship between fracture toughness,fracture path,and microstructure of 7050 aluminum alloy:part I:quantitative characterization[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29(04):1191-1201. |
| [18] | 潘志军,黎文献.高强铝合金断裂韧性的研究现状及展望[J].材料导报,2002(07):14-17. |
| [19] | Z. Cvijovic;M. Rakin;M. Vratnica .Microstructural dependence of fracture toughness in high-strength 7000 forging alloys[J].Engineering Fracture Mechanics,2008(8):2115-2129. |
| [20] | R.C. DORWARD;D.J. BEERNTSEN .Grain Structure and Quench-Rate Effects on Strength and Toughness of AA7050 Al-Zn-Mg-Cu-Zr Alloy Plate[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1995(9):2481-2484. |
| [21] | ROBINSONMJ .Mathematical modelling of exfoliation corrosion in high strength aluminium alloys[J].Corrosion Science,1982,22(08):775-790. |
| [22] | 李文斌,潘清林,邹亮,梁文杰,何运斌,王昌臻.含Sc的超高强Al-Zn-Cu-Mg-Zr合金的晶间腐蚀和剥落腐蚀行为[J].航空材料学报,2008(01):53-58. |
| [23] | M. Salazar-Guapuriche,Y. Y. Zhao,A. Pitman,A. Greene.Variations of properties across plate thickness for Al alloy 7010[J].中国有色金属学会会刊（英文版）,2005(06):1258-1263. |
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