江超华,李晶鑫,朱戴博,曹普立,张雅婷,李娟,张逸文,朱玉龙,刘吉荣

• 1:湘潭大学机械工程与力学学院
• 2:复杂轨迹加工工艺及装备教育部工程研究中心
• 3:中国航发南方工业有限公司

摘要(Abstract)：

借助光学显微镜、扫描电镜(SEM)、万能拉伸试验机、电化学工作站和X射线衍射(XRD)等研究了不同含量Er添加对铸态6061铝合金组织和性能的影响。结果表明：当Er添加量为0.2～0.6 mass%时，6061铝合金的晶粒细化效果明显，针状的β-AlFeSi相转变为颗粒状AlFeSiEr相，Er的添加抑制了Mg_2Si相析出，并使得其形貌由针状改变为颗粒状，合金的抗拉强度和耐腐蚀性能得到共同提高；当Er添加量超过0.6 mass%时，AlFeSiEr相逐渐粗化为块状，Mg_2Si相含量增加，这对6061铝合金的力学性能和耐腐蚀性能产生不利影响。当Er含量为0.6 mass%时，6061铝合金的综合力学性能最佳，其抗拉强度、屈服强度和伸长率分别为161.1 MPa、84.2 MPa和8.47%,此时，合金的氧化膜也更稳定且均匀，表现出较好的耐腐蚀性能。

关键词(KeyWords)： 6061铝合金;稀土Er;力学性能;耐腐蚀性能;电化学

Abstract:

Keywords:

基金项目(Foundation): 湖南省自然科学基金面上项目(2022JJ30570);; 湖南省优秀博士后创新人才项目(2021RC2087);; 湖南省水利厅科技项目(XSKJ2021000-31)

作者(Author): 江超华,李晶鑫,朱戴博,曹普立,张雅婷,李娟,张逸文,朱玉龙,刘吉荣

DOI: 10.13289/j.issn.1009-6264.2023-0120

参考文献(References)：

• [1] Barnwal V K,Raghavan R,Tewari A,et al.Effect of microstructure and texture on forming behaviour of AA-6061 aluminium alloy sheet[J].Materials Science and Engineering A,2017,679:56-65.
• [2] Li H,Yan Z,Cao L.Bake hardening behavior and precipitation kinetic of a novel Al-Mg-Si-Cu aluminum alloy for lightweight automotive body[J].Materials Science and Engineering A,2018,728:88-94.
• [3] Buchanan K,Colas K,Ribis J,et al.Analysis of the metastable precipitates in peak-hardness aged Al-Mg-Si(-Cu) alloys with differing Si contents[J].Acta Materialia,2017,132:209-221.
• [4] 贾志宏，丁立鹏，吴赛楠，等.汽车车身用6000系铝合金板材微观组织与热处理工艺的研究进展[J].材料工程，2014(12):104-113.JIA Zhi-hong,DING Li-peng,WU Sai-nan,et al.Research progress on microstructure and heat treatment of 6000 series aluminum alloys sheet for automobile body[J].Journal of Materials Engineering,2014(12):104-113.
• [5] 陈志强，胡文鑫，石磊，等.复合稀土与Al-Ti-B协同作用对6061铝合金微观组织和力学性能的影响[J].铸造技术，2022,43(10):897-905.ZHENG Zhi-qiang,HU Wen-xin,SHI Lei,et al.Synergistic effect of misch metal and Al-Ti-B on the microstructure and mechanical properties of 6061 aluminum alloy[J].Foundry Technology,2022,43(10):897-905.
• [6] 刘辉丽，丁幸宇，徐龙辉.Mg2Si含量对6061铝合金组织和力学性能的影响[J].南方金属，2019(4):1-4.LIU Hui-li,DING Xing-yu,XU Long-hui.Effect of Mg2Si content on microstructure and mechanical mroperties of aluminum alloy 6061[J].Southern Metals,2019(4):1-4.
• [7] 毛文龙，杨虹，杨莉，等.Si含量对Al-Si-Mg合金铸造组织与性能的影响[J].材料研究与应用，2016,10(4):258-263.MAO Wen-long,YANG Hong,YANG Li,et al.Effect of Si content on microstructure and properties of as-cast Al-Si-Mg alloy[J].Materials Research and Application,2016,10(4):258-263.
• [8] 李普超，汪明朴，孙孝华，等.Al-Mg-Si 合金的时效研究[J].中南工业大学学报，1998(3):61-64.LI Pu-chao,WANG Ming-pu,SUN Xiao-hua,et al.Study of aging of Al-Mg-Si alloys[J].Journal of Central South University,1998(3):61-64.
• [9] Hosseinifar M,Mmalakhov D V.Effect of Ce and La on microstructure and properties of a 6xxx series type aluminum alloy[J].Journal of Materials Science,2008,43(22):7157-7164.
• [10] 武宇波，章剑.B元素对8030铝合金组织性能的影响[J].有色金属材料与工程，2022,43(4):15-20.WU Yu-bo,ZHANG Jian.Effect of B element on microstructure and properties of 8030 Al alloy[J].Nonferrous Metal Materials and Engineering,2022,43(4):15-20.
• [11] 马力.微量稀土Sc对6061变形铝合金组织和性能的影响[D].合肥：合肥工业大学，2015.MA Li.Influence of scandium on microstructure and properties of 6061 aluminum alloys[D].Hefei:Hefei University of Technology,2015.
• [12] 栾粟.Er含量对6061铝合金铸轧板组织演变行为影响研究[D].鞍山：辽宁科技大学，2021.LUAN Su.Study on the Effect of Er ratio on the microstructure evolution of the twin-roll casting 6061 aluminum alloy plate[D].Anshan:University of Science and Technology Liaoning,2021.
• [13] 邢泽炳，聂祚仁，邹景霞，等.Al-Er合金铸锭中铒的存在形式及作用研究[J].中国稀土学报，2007(2):234-238.XING Ze-bing,NIE Zuo-ren,ZOU Jing-xia,et al.Existing from and effect of erbium in Al-Er alloy[J].Journal of the Chinese Society of Rare Earths,2007(2):234-238.
• [14] 文胜平，林双平，宫博，等.含铒Al-4.5Mg-0.7Mn-0.1Zr合金中Al3Er相的形成及微观结构[J].稀有金属，2010,34(6):802-806.WEN Sheng-ping,LIN Shuang-ping,GONG Bo,et al.Formation and microstructure of Al3Er in Er-bearing Al-4.5 Mg-0.7 Mn-0.1Zr alloy[J].Chinese Journal of Rare Metals,2010,34(6):802-806.
• [15] Li H,Gao Z,Yin H,et al.Effects of Er and Zr additions on precipitation and recrystallization of pure aluminum[J].Scripta Materialia,2013,68(1):59-62.
• [16] 陈永禄，傅高升，陈文哲.微量稀土对Al-1Mn-1Mg合金中杂质相的变质作用探讨[J].中国稀土学报，2005(S2):99-103.CHEN Yong-lu,FU Gao-sheng,CHEN Wen-zhe.Effect of rare earth on modification behavior of impurity phases in Al-1Mn-1Mg alloy[J].Journal of the Chinese Society of Rare Earths,2005(S2):99-103.
• [17] Hu X,Jiang F,Ai F,et al.Effects of rare earth Er additions on microstructure development and mechanical properties of die-cast ADC12 aluminum alloy[J].Journal of Alloys and Compounds,2012,538:21-27.
• [18] 贾强，孙清洲，边秀房，等.La对ZL303合金组织与性能的影响[J].特种铸造及有色合金，2007(10):807-810+737-738.JIA Qiang,SUN Qing-zhou,BIAN Xiu-fang,et al.Effect of La on microstructure and properties of ZL303 alloy[J].Special Casting & Nonferrous Alloys,2007(10):807-810+737-738.
• [19] 艾秀兰，李英民.稀土元素对Al-Mg2Si合金组织及性能的影响[J].铸造，2005(3):238-240.AI Xiu-lan,LI Ying-min.Influence of RE on microstructure and mechanical property of Al-Mg2Si alloy[J].Foundry,2005(3):238-240.
• [20] Singh R K,Singh A K,Prasad N E.Texture and mechanical property anisotropy in an Al-Mg-Si-Cu alloy[J].Materials Science and Engineering A,2000,277(1):114-122.
• [21] 孙晓光，陈志坚，周学杰，等.电偶对中6A01铝合金的电化学腐蚀行为研究[J].材料保护，2022,55(1):102-108.SUN Xiao-guang,CHEN Zhi-jian,ZHOU Xue-jie,et al.Study on electrochemica corrosion behavior of 6A01 aluminum alloy in galvanic pair[J].Materials Protection,2022,55(1):102-108.
• [22] Osorio W R,Freitas E S,Garcia A.EIS parameters and cell spacings of an Al-Bi alloy in NaCl solution[J].Electrochimica Acta,2013,108:781-787.
• [23] 宋海林，高萌，邢娜，等.2种盐雾环境下6061车用铝合金的加速腐蚀行为研究[J].材料保护，2020,53(11):21-25.SONG Hai-lin,GAO Meng,XING Na,et al.Accelerated corrosion behavior research of aluminum alloy 6061 for vehicles during two different salt spray atmospheric environments[J].Materials Protection,2020,53(11):21-25.
• [24] 罗雪，李小强，董重里.腐蚀产物对6061铝合金海洋大气腐蚀过程的影响[J].腐蚀与防护，2018,39(8):587-591.LUO Xue,LI Xiao-qiang,DONG Zhong-li.Effect of corrosion products on corrosion process of 6061 aluminum alloy in marine atmosphere[J].Corrosion & Protection,2018,39(8):587-591.
• [25] 单际强，侯丹丹，张今捷，等.6082铝合金电化学腐蚀行为及晶间腐蚀机理研究[J].腐蚀科学与防护技术，2018,30(4):353-361.SHAN Ji-qiang,HOU Dan-dan,ZHANG Jin-jie,et al.Electrochemical corrosion behavior and inter-granular corrosion mechanism of 6082 Al-alloy[J].Corrosion Science and Protection Technology,2018,30(4):353-361.
• [26] 李琳琳.6×××系铝合金中第二相Mg2Si的局部腐蚀机理研究[D].沈阳：沈阳工业大学，2017.LI Lin-lin.Study on the localized corrosion mechanism of the second phase Mg2Si in 6××× series aluminum alloys[D].Shenyang:Shenyang University of Technology,2017.

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