王松辉,孙有平,陶德福,何江美,李旺珍

• 1:广西科技大学机械工程学院

摘要(Abstract)：

采用光学显微镜(OM)、透射电镜(TEM)、X射线衍射(XRD)和拉伸试验机等研究了Zr含量对2524铝合金显微组织及力学性能的影响。结果表明:添加Zr元素能够明显细化铸态2524铝合金的晶粒。铸态合金存在明显的枝晶偏析,经过均匀化退火处理后,非平衡低熔点相基本溶入基体,晶间组织分布趋于均匀。大应变轧制变形后,2524铝合金中均得到了典型的纤维状组织,合金中的第二相主要为S(Al_2CuMg)相,θ(Al_2Cu)相、T(Al_(20)Cu_2Mn_3)相和Al_3Zr相,并沿晶界呈连续分布。经时效处理后,形成大量弥散的Al_3Zr粒子,对位错和亚晶界具有强烈的钉扎作用,能明显提高合金的抗再结晶能力和室温力学性能。随着Zr含量的增加合金力学性能呈现递增趋势,当Zr含量为0.5 mass%时,2524铝合金的抗拉强度、屈服强度和伸长率分别为645 MPa、548 MPa和11%。

关键词(KeyWords)： 2524铝合金;Zr含量;显微组织;力学性能;大应变轧制

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51561004);; 柳州市科学研究与技术开发计划(2017BD20301);; 广西科技大学研究生教育创新计划项目(GKYC201601)

作者(Author): 王松辉,孙有平,陶德福,何江美,李旺珍

DOI: 10.13289/j.issn.1009-6264.2018-0298

参考文献(References)：

• [1] Lin Y C,Xia Y C,Jiang Y Q,et al.Precipitation hardening of 2024-T3 aluminum alloy during creep aging[J].Materials Science and Engineering A,2013,565(5):420-429.
• [2] Lin Y C,Xia Y C,Jiang Y Q,et al.Precipitation in Al-Cu-Mg alloy during creep exposure[J].Materials Science and Engineering A,2012,556:796-800.
• [3] Cheng S,Zhao Y H,Zhu Y T,et al.Optimizing the strength and ductility of fine structured 2024 Al alloy by nano-precipitation[J].Acta Materialia,2007,55:5822-5832.
• [4] 刘兵,彭超群,王日初,等.大飞机用铝合金的研究现状及展望[J].中国有色金属学报,2010,20(9):1705-1715.LIU Bing,PENG Chao-qun,WANG Ri-chu,et al.Recent development and prospects for giant plane aluminum alloys[J].The Chinese Journal of Nonferrous Metals,2010,20(9):1705-1715.
• [5] Dursun T,Soutis C.Recent developments in advanced aircraft aluminium alloy[J].Materials and Design,2014,56:862-871.
• [6] 王松辉,孙有平,何江美,等.均匀化处理对Al-4.5Cu-1.5Mg-0.6Mn-0.2Ti-0.5Zr合金组织及性能的影响[J].材料热处理学报,2018,39(5):37-43.WANG Song-hui,SUN You-ping,HE Jiang-mei,et al.Effect of homogenization treatment on microstructure and mechanical properties of Al-4.5Cu-1.5Mg-0.6Mn-0.2Ti-0.5Zr aluminum alloy[J].Transactions of Materials and Heat Treatment,2018,39(5):37-43.
• [7] 雷彬彬,周志明,黄伟九,等.Al-Cu-Mg高强铝合金的研究进展[J].热加工工艺,2012,41(2):41-45.LEI Bin-bin,ZHOU Zhi-ming,HUANG Wei-jiu,et al.Development of high-strength Al-Cu-Mg alloy[J].Hot Working Technology,2012,41(2):41-45.
• [8] Kang W,Li H Y,Zhao S X,et al.Effects of homogenization treatments on the microstructure evolution,microhardness and electrical conductivity of dilute Al-Sc-Zr-Er alloys[J].Journal of Alloys and Compounds,2017,704:683-692.
• [9] Sun F F,Nash G L,Li Q Y,et al.Effect of Sc and Zr additions on microstructures and corrosion behavior of Al-Cu-Mg-Sc-Zr alloys[J].Journal of Materials Science and Technology,2017,33:1015-1022.
• [10] 张文静,任伟才,邓桢桢,等.Zr元素对超高强铝合金微观组织及力学性能的影响[J].有色金属加工,2013,42(4):8-11.ZHANG Wen-jing,REN Wei-cai,DENG Zhen-zhen,et al.Effect of Zirconium on the microstructure and mechanical properties of super-high strength aluminum alloys[J].Nonferrous Metals Processing,2013,42(4):8-11.
• [11] 周娟,肖于德,马瑞.Zr对铸造高强铝合金组织和性能的影响[J].铸造,2009,58(3):266-269.ZHOU Juan,XIAO Yu-de,MA Rui.Effect of Zirconium on microstructures and mecha nical properties of high strength aluminum alloy[J].Foundry,2009,58(3):266-269.
• [12] 陈琴,潘清林,王迎,等.微量Sc和Zr对Al-Mg-Mn合金组织与力学性能的影响[J].中国有色金属学报,2012,22(6):1555-1563.CHEN Qin,PAN Qing-lin,WANG Ying,et al.Effects of minor scandium and zirconium on microstructure and mechanical properties of Al-Mg-Mn alloys[J].The Chinese Journal of Nonferrous Metals,2012,22(6):1555-1563.
• [13] Li G,Zhao N Q,Liu T,et al.Effect of Sc/Zr ratio on the microstructure and mechanical properties of new type of Al-Zn-Mg-Sc-Zr alloys[J].Materials Science and Engineering A,2014,617:219-227.
• [14] Zhu S Q,Yan H G,Chen J H,et al.Fabrication of Mg-Al-Zn-Mn alloy sheets with homogeneous fine-grained structures using high strain-rate rolling in a wide temperature range[J].Materials Science and Engineering A,2013,559:765-772.
• [15] Chen C,Chen J H,Yan H G,et al.Dynamic precipitation,microstructure and mechanical properties of Mg-5Zn-1Mn alloy sheets prepared by high strain-rate rolling[J].Materials and Design,2016,100:58-66.
• [16] 周学浩,孙有平,王文熙,等.轧制温度对大应变轧制Al-Mg-Si-Cu合金组织与力学性能的影响[J].金属热处理,2017,42(9):21-25.ZHOU Xue-hao,SUN You-ping,WANG Wen-xi,et al.Effect of temperature on microstructures and mechanical properties of Al-Mg-Si-Cu alloy fabricated by severe strain rolling[J].Heat Treatment of Metals,2017,42(9):21-25.
• [17] Liu J,Yao P,Zhao N Q,et al.Effect of minor Sc and Zr on recrystallization behavior and mechanical properties of novel Al-Zn-Mg-Cu alloys[J].Journal of Alloys and Compounds,2016,657:717-725.
• [18] Deng Y,Xu G F,Yin Z M,et al.Effects of Sc and Zr microalloying additions on the recrystallization texture and mechanism of Al-Zn-Mg alloys[J].Journal of Alloys and Compounds,2013,580:412-426.
• [19] Vladivoj O,Margarita S.Resistance to recrystallization due to Sc and Zr addition to Al-Mg alloys[J].Materials Characterization,2001,47:157-162.
• [20] Shen F H,Yi D Q,Wang B,et al.Semi-quantitative evaluation of texture components and anisotropy of the yield strength in 2524 T3 alloy sheets[J].Materials Science and Engineering A,2016,675:386-395.
• [21] Shen F H,Wang B,Yi D Q,et al.Effects of heating rate during solid-solution treatment on microstructure and fatigue properties of AA2524 T3 Al-Cu-Mg sheet[J].Materials and Design,2016,104:116-125.
• [22] 余琨,李松瑞,黎文献,等.微量Sc和Zr对2618铝合金再结晶行为的影响[J].中国有色金属学报,1999(4):709-713.YU Kun,LI Song-rui,LI Wen-xian,et al.Effect of trace Sc and Zr on recrystallization behavior of 2618 alloy[J].The Chinese Journal of Nonferrous Metals,1999(4):709-713.
• [23] Shen F H,Wang B,Liu H Q,et al.Effects of secondary particle-induced recrystallization on fatigue crack growth in AA2524/Al-Cu-Mg T3 alloy sheets[J].Journal of Alloys and Compounds,2016,685:571-580.
• [24] Singh D,Rao P N,Jayaganthan R.Effect of deformation temperature on mechanical properties of ultrafine grained Al-Mg alloys processed by rolling[J].Materials and Design,2013,50:646-655.
• [25] Cheng S,Zhao Y H,Zhu Y T,et al.Optimizing the strength and ductility of fine structured 2024 Al alloy by nano-precipitation[J].Acta Materialia,2007,55(17):5822-5832.
• [26] Niranjani V L,Kumar K C H,Sarma V S.Development of high strength Al-Mg-Si AA6061 alloy through cold rolling and ageing[J].Materials Science and Engineering A,2009,515:169-174.
• [27] 朱大鹏,尹志民,滕浩,等.微量Sc和Zr对Al-Mg-Mn合金组织和性能的影响[J].宇航材料工艺,2004(6):45-49.ZHU Da-peng,YIN Zhi-min,TENG Hao,et al.Effect of trace Sc and Zr on microstruetuers and properties of Al-Mg-Mn alloy[J].Aerospace Materials and Technology,2004(6):45-49.
• [28] Royset J,Ryum N.Scandium in aluminium alloys[J].International Materials Reviews,2005,50(1):19-44.
• [29] 黄乾尧,李汉康.高温合金[M].北京:冶金工业出版社,2000:22-26.

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