研究了Al-6.3Zn-2.8Mg-1.8Cu铸造铝合金的组织和室温力学性能.研究表明,在金属型铸造条件下,Al-6.3Zn-2.8Mg-1.8Cu合金的铸态组织为近等轴晶,相组成为α(Al)基体、枝晶间α(Al)+η(MgZn2)共晶、晶内游离η相(MgZn2)、少量T相(Mg3ZnxCu3-xAl2)及少量颗粒状Al7Cu2Fe.固溶处理后,原铸态组织中的η(MgZn2)相大部分溶解消失,但形成新的沿晶界分布的S相(Al2CuMg).实验确定了固溶态Al-6.3Zn-2.8Mg-1.8Cu合金较优的单级和双级时效工艺.与单级时效工艺相比,采用双级时效工艺处理后,抗拉强度由480MPa增加至490MPa,延伸率由0.2％增加至2.2％.
参考文献
| [1] | Heinz A,Haszler A,Keidel C,Moldenhauer S.Mater Sci Eng,2000; A280:102 |
| [2] | Srivatsan T S.J Mater Sci,1992; 27:4772 |
| [3] | Zakharov V V,Rostova T D.Met Sci Heat Treat,1995;37(5-6):203 |
| [4] | Mukhopadhyay A K,Reddy G M,Prasad K S,Varma V K,Mondac C.In:Nie J F,Morton A J,Muddle B C,eds.,Proc 9th Int Conf on Aluminium Alloys,Australia:Institute of Materials Engineering Australia Ltd,2004:883 |
| [5] | Wang H B,Huang J F,Yang B,Zhang J S,Zhang Y A,Xiong B Q.Mater Rev,2003; 17(9):1(王洪斌,黄进峰,杨滨,张济山,张永安,熊柏青.材料导报,2003; 17(9).1) |
| [6] | Chen C Q.Chin J Nonferrour Met,2002; 12(3):22(陈昌麒.中国有色金属学报,2002; 12(3):22) |
| [7] | Chen K H,Liu H W,Zhang Z,Li S,Todd R I.J Mater Process Technol,2003; 142:190 |
| [8] | Mondal C,Mukhopadhyay A K.Mater Sci Eng,2005;A391:367 |
| [9] | Xie F Y,Yan X Y,Ding L,Zhang F,Chen S L,Chu M G,Chang Y A.Mater Sci Eng,2003; A355:144 |
| [10] | Manish D D.PhD Thesis,Georgia Institute of Technology,2000 |
| [11] | Fan X G.PhD Thesis,Harbin Institute of Technology,2007(樊喜刚.哈尔滨工业大学博士学位论文,2007) |
| [12] | Fan X G,Jiang D M,Meng Q C,Zhong L.Mater Lett,2006; 60:1475 |
| [13] | Starink M J,Wang S C.Acta Mater,2003; 51:5131 |
| [14] | Poole W J,Saeter J A,Skjervold S,Watercoo G.Metall Mater Trans,2000; 31A:2327 |
| [15] | Starink M J,Li X M.Metall Mater Trans,2003; 34A:899 |
| [16] | You W,Lin S Y.Alum Fabr,1999; 22(1):4(游文,林顺岩.铝加工,1999; 22(1):4) |
| [17] | Si N C,Fu M X.Nonferrous Metal Material and Prepa-ration.Beijing:Chemical Industry Press,2006:36(司乃潮,傅明喜.有色金属材料及制备.北京:化学工业出版社,2006:36) |
| [18] | Li Y Y,Guo G W,Luo Z Q,Long Y.Spec Cast Nonferrous Alloys,2000; 6:45(李元元,郭国文,罗宗强,龙雁.特种铸造及有色合金,2000;6:45) |
| [19] | Li N K,Cui J Z.Light Alloy Fabr Technol,2008; 36(1):5(李念奎,崔建忠.轻合金加工技术,2008; 36(1):5) |
| [20] | Zhang B C.Nonferrous Metal and Heat-treatment.Xi'an:NWPU Industry Press,1993:62(张宝昌.有色金属及其热处理.西安:西北工业大学出版社,1993:62) |
| [21] | Sheppard T.Extrusion of Aluminium Alloy.London:Kluwer Academic Publisher,1999:23 |
| [22] | Alekseev A A,Fridlyander I N,Berg L B.Mater Sci Forum,2002; 396-342:621 |
| [23] | Rokhlin L L,Dobatkina T V,Bochvar N R,Lysova E V.J Alloys Compd,2004; 367:10 |
| [24] | Metallographic Atlas Compilation Group.Wrought Aluminum Alloy Metallographic Atlas.Beijing:Metallurgical Industry Press,1975:157(金相图谱编写组.变形铝合金金相图谱.北京:冶金工业出版,1975:157) |
| [25] | Ding H L,Xin Z H.Practical Aluminum,Copper and Its Alloys Heat Treatment and Metallurgical Failure Analysis.Beijing:Machinery Industry Press,2008:102(丁惠麟,辛智华.实用铝、铜及其合金金相热处理和失效分析.北京:机械工业出版社,2008:102) |
| [26] | Lu S S,Gu K D,Zheng L S.Nonferrous Casting Alloys and Melting.Beijing:National Defense Industry Press,1983:52(陆树荪,顾开道,郑来苏.有色铸造合金及熔炼.北京:国防工业出版社,1983:52) |
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