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强激光冲击对7075 铝合金等离子弧焊接头电化学腐蚀行为的影响

Effect of Laser Shock Processing on Electrochemical Corrosion Behavior of 7075 Aluminum Alloy Plasma Arc Weldments

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摘要

采用极化曲线、电化学交流阻抗谱、X 射线衍射仪(XRD)测试残余应力、扫描电镜(SEM)测试腐蚀形貌从实验上研究了强激光冲击对7075 铝合金等离子弧焊接头电化学腐蚀行为的影响。研究结果表明,激光冲击后7075 铝合金焊接头表面残余应力由拉应力变成压应力,从而使得铝合金等离子弧焊接头的自腐蚀电位和点蚀电位提高,激光冲击4 次后自腐蚀电位正移700 mV,点蚀电位正移约为1000 mV,极化曲线上出现了电位范围至712.9 mV 的阳极钝化区间。经过激光冲击处理细化晶粒,7075 铝合金焊接头的显微孔洞数量和气穴的体积减少,组织致密性提高,溶液中Cl等原子的渗入被有效阻止,从而降低了腐蚀速率,使自腐蚀电流密度降低了1个数量级。激光冲击使焊接头处晶粒沿β相分布变得均匀,β相与α基相构成的微电偶的活性降低,钝化电阻比冲击前提高了近30 倍,浓差极化现象大为改善。

Abstract

The effect of laser shock processing (LSP) on electrochemical corrosion behavior of 7075 aluminum alloy plasma arc weldments has been studied by using polarization curves, electrochemical impedance spectroscopy, residual stress tested by X- ray diffraction technique and scanning electron microscope (SEM) morphology of corrosion surface. The results show that the surface residual stress of weldments with LSP has been changed from tensile to compression, which leads to the improvement of the free-corrosion potential and pitting potential. The free-corrosion potential of weldments with 4 times LSP impacts is about 700 mV higher than that without LSP, and the pitting potential also occurs in about 1000 mV, besides the polarization curves exhibit an anode passivation zone in a wide range of potential with 712.9 mV. After grains being refined by LSP, the number of the microscopic holes and the volume of cavitation have been reduced, and the compactness of its surface microstructure has been improved. The infiltration of atoms such as Cl- in the NaCl solution has been effectively prevented, thereby the corrosion rate can be reduced, and the corrosion current density has been decreased by one orders of magnitude. The grains have been well-distributed along the β -phase in weldments with LSP. The activity of micro-galvanic made up of β phase and α base phase has been reduced, and the impact of passive resistance is nearly 30 times higher than that without LSP. Concentration polarization has been greatly improved.

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中图分类号:TG174.1

DOI:10.3788/cjl201542.1203006

所属栏目:激光制造

责任编辑:宋梅梅  信息反馈

基金项目:国家“863”计划子项目(2012AA040104)、国家自然科学基金(51275221,51105182)、江苏省高校自然科学基金(12KJB460002)、江苏省光子制造重点实验室开放基金(GZ201202,GZ201101),江苏省青蓝工程项目,校科研预研项目(KYY12040)

收稿日期:2015-04-13

修改稿日期:2015-07-01

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王江涛:江苏大学机械工程学院, 江苏 镇江 212013江苏理工学院材料工程学院, 江苏 常州 213001
张永康:江苏大学机械工程学院, 江苏 镇江 212013东南大学机械工程学院, 江苏 南京 210096
陈菊芳:江苏理工学院材料工程学院, 江苏 常州 213001
周金宇:江苏理工学院材料工程学院, 江苏 常州 213001
卢雅琳:江苏理工学院材料工程学院, 江苏 常州 213001
张朝阳:江苏大学机械工程学院, 江苏 镇江 212013

联系人作者:王江涛(jiasqq1225@126.com)

备注:王江涛(1978—),男,博士研究生,主要从事激光表面改性方面的研究。

【1】Ke Yinglin, Dong Huiyue. Pre-stretching process and its application in reducing residual stress of quenched 7075 aluminum alloy thick-plates[J]. The Chinese Journal of Nonferrous Metals, 2004, 14(4): 639-645.
柯映林, 董辉跃. 7075 铝合金厚板预拉伸模拟分析及其在淬火残余应力消除中的应用[J]. 中国有色金属学报, 2004, 14(4): 639-645.

【2】Lei Yucheng, Zheng Huijin,Cheng Xiaonong. Simulation of molten pool for vertical keyhole plasma arc welding in aluminium alloy [J]. Transactions of the China welding Institution, 2003, 24(1): 44-47.
雷玉成, 郑惠锦, 程晓农. 铝合金等离子弧立焊穿孔熔池的计算机模拟[J]. 焊接学报, 2003, 24(1): 44-47.

【3】Huang Tsaishang Frankel G S. Kinetics of sharp intergranular corrosion fissures in AA7178[J]. Corrosion Science, 2007, 49(2): 858-876.

【4】Li Shaozhe, Zhang Lingfeng, Xing Qingpu. Effect of laser shock processing on electrochemical corrosion behavior of AZ91 magnesium alloy[J]. Chinese J Lasers, 2013, 40(5): 0503004.
李少哲, 张凌峰, 刑清蒲. 激光冲击强化对AZ91镁合金的电化学腐蚀行为的影响[J]. 中国激光, 2013, 40(5): 0503004.

【5】Zhang Yongkang, You Jian, Lu Jinzhong, et al.. Effects of laser shock processing on stress corrosion cracking susceptibility of AZ31B magnesium alloy[J]. Surface & Coatings Technology, 2010, 204(24): 3947-3953.

【6】Wu Bian, Wang Shengbo, Guo Dahao, et al.. Research of material modification induced by laser shock processing on aluminum alloy [J]. Acta Optica Sinica, 2005, 25 (10): 1352-1356.
吴边, 王声波, 郭大浩, 等. 强激光冲击铝合金改性处理研究[J]. 光学学报, 2005, 25(10): 1352-1356.

【7】Zhang Qinglai, Qiang Yang, An Zhibin, et al.. Study on electrochemical corrosion of magnesium alloys by laser shock processing in Nacl solution[J]. Chinese J Lasers, 2014, 41(9): 0903002.
张青来, 钱阳, 安志斌, 等. 基于激光冲击的镁合金在Nacl溶液中电化学腐蚀的研究[J]. 中国激光, 2014, 41(9): 0903002.

【8】Omar Hatanleh, Adrian DeWald. An investigation of the peening effects on the residual stresses in friction stir welded 2195 and 7075 aluminum alloy joints[J]. Journal of Materials Processing Technology, 2009, 209(10): 4822-4829.

【9】Lu Jinzhong, Luo Kaiyu, Feng Aixin, et al.. Microstructural enhancement mechanism of LY2 aluminum alloy by means of a single laser shock processing[J]. Chinese J Lasers, 2010, 37(10): 2662-2666.
鲁金忠, 罗开玉, 冯爱新, 等. 激光单次冲击LY2 铝合金微观强化机制研究[J]. 中国激光, 2010, 37(10): 2662-2666.

【10】Zhou Jianzhong, Zhong Hui, Huang Shu, et al.. Surface micro- dimple effect and electrochemical corrosion behaviors of AZ31B magnesium alloy treated by laser[J]. Chinese J Lasers, 2015, 42(3): 0303007.
周建忠, 钟辉, 黄舒, 等. AZ31B镁合金激光表面微凹坑效应及其电化学腐蚀行为[J]. 中国激光, 2015, 42(3): 0303007.

【11】Zhu Ying, Fan Bowen, Guo Wei, et al.. Influence of laser shock peening times on microstructure and hardness of TA15 titanium alloy [J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(4): 444-448.
朱颖, 范博文, 郭伟, 等. 激光冲击次数对TA15微观组织和硬度的影响[J]. 北京航空航天大学学报, 2014, 40(4): 444-448.

【12】Li Xingcheng, Zhang Yongkang, Lu Yalin, et al.. Research of corrosion resistance for AZ31 magnesium alloy by laser shock processing [J]. Chinese J Lasers, 2014, 41(4): 0403002.
李兴成, 张永康, 卢雅琳, 等. 激光冲击AZ31镁合金抗腐蚀性能研究[J]. 中国激光, 2014, 41(4): 0403002.

【13】Zhang Qinglai, Wang Rong, Zhang Bingxin, et al.. Effect of laser shock processing on mechanical properties and mesostructures of AZ31 magnesium alloy[J]. Chinese J Lasers, 2015, 42(3): 0303001.
张青来, 王荣, 张冰昕, 等. 激光冲击强化对AZ31镁合金力学性能和组织结构的影响[J]. 中国激光, 2015, 42(3): 0303001.

【14】Xiong Qingren, Li Weiwei, Fu Anqing, et al.. Effect of residual stress on electrochemistry corrosion resistance of X80 UOE pipe[J]. Rare Metal Materials and Engingeering, 2012, 41(S2): 749-753.
熊庆人, 李为卫, 付安庆, 等. 残余应力对X80 UOE 钢管耐电化学腐蚀性能的影响[J]. 稀有金属材料与工程, 2012, 41(S2): 749-753.

【15】Nestor Perez. Electrochemistry and Corrosion Science[M]. Zhu Yongchun et al. Transl. Beijing: Chemical Industry Press, 2012.
奈斯特?派雷兹. 电化学与腐蚀科学[M]. 朱永春等译. 北京: 化学工业出版社, 2012.

【16】Lu Jinzhong. Investigation of Laser Shock Processing on the Mechanical Properties and Micro-Plastic Deformation Mechanism of LY2 Aluminum Alloy[D]. Zhenjiang: Jiangsu University, 2010: 64-75.
鲁金忠. 激光冲击强化铝合金力学性能及微观塑性变形机理研究[D]. 镇江: 江苏大学, 2010: 64-75.

【17】Zhang Yongkang, Zhang Leihong, Zuo Dunwen, et al.. Residual stress of 3A21 aluminium sheet by laser shock processing[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2005, 37(S):16-20.
张永康, 张雷洪, 左敦稳, 等. 激光冲击成形下3A21铝板料表面残余应力[J]. 南京航空航天大学学报, 2005, 37(S):16-20.

【18】Fan Yong,Wang Shengbo, Wu Hongxing, et al.. Research of residual stress induced by laser shock processing on 7075 aerial alluminium alloy[J]. Applied Laser, 2003, 23(1): 6-7.
范勇, 王声波, 吴鸿兴, 等. 7050航空铝合金激光冲击强化残余压应力研究[J]. 应用激光, 2003, 23(1): 6-7.

【19】L Zhang ,Y K Zhang, J L Lu, et al.. Effects of laser shock processing on electrochemical corrosion resistance of ANSI 304 stainless steel weldments after cavitation erosion[J]. Corrosion Science, 2013, 66(1): 16-20.

【20】R M Pidaparti, R R Patel. Correlation between corrosion pits and stresses in Al alloys[J]. Materials Letters, 2008, 62(30): 4497- 4499.

【21】R M. Pidaparti, A S Rao. Analysis of pits induced stresses due to metal corrosion[J]. Corrosion Science, 2008, 50(7): 1932-1938.

【22】Wang Cheng, Lai Zhilin, He Weifeng, et al.. Effect of multi-impact on high cycle fatigue properties of 1Cr11Ni2W2MoV stainless steel subject to laser shock processing[J]. Chinese J Lasers, 2014, 41(4): 0103001.
汪诚, 赖志林, 何卫锋, 等. 激光冲击次数对1Cr11Ni2W2MoV 不锈钢高周疲劳性能的影响[J]. 中国激光, 2014, 41(4): 0103001.

【23】Luo Mi, Luo Kaiyu, Wang Qingwei, et al.. Numerical simulation of laser shock peening on residual stress field of 7075-T6 aluminium alloy welding[J]. Acta Optica Sinica, 2014, 34(4): 0414003.
罗密, 罗开玉, 王庆伟, 等. 激光冲击7075-T6铝合金焊缝的残余应力场数值模拟[J]. 光学学报, 2014, 34(4): 0414003.

【24】Ji Kai, Zu Guoyin, Yao Guangchun. Corrosion behavior of a new weldable aluminum alloy:6005A[J]. Journal of Northeastern University (Natural Science), 2010, 31(7): 990-994.
季凯, 祖国胤, 姚广春. 新型可焊6005A 铝合金的腐蚀行为[J].东北大学学报(自然科学版), 2010, 31(7): 990-994.

【25】Fratila A L, Apachitei I, Duszczyk J. Characterization of cast AlSi(Cu) alloys by scanning Kelvin probe microscopy[J]. Electrochimica Acta, 2006, 51(26): 5892-5896.

【26】Cui Yan, Zhao Xiaoli, Guo Ruisong. Improved electrochemical performance of La0.7Sr0.3MnO3 and carbon co- coated LiFePO4 synthesized by freeze-drying process[J]. Electrochimica Acta, 2010, 55(3): 922-926.

【27】Ma Jingling, Wen Jiuba, Lu Xianwen, et al.. Electrochemical impedance spectroscopy of aluminum alloy anode during corrosion process[J]. Corrosion & Protection, 2009, 30(6): 373-376.
马景灵, 文九巴, 卢现稳, 等. 铝合金阳极腐蚀过程的电化学阻抗谱研究[J]. 腐蚀与防护, 2009, 30(6): 373-376.

【28】Cao Chunan, Zhang Jianqing. An Introduction to Electrochemical Impedance Spectroscopy[M]. Beijing: Science Press, 2002.
曹楚南, 张鉴清. 电化学阻抗谱导论[M]. 北京: 科学出版社, 2002.

【29】J Z Lu, K Y Luo, Y K Zhang, et al.. Grain refinement of LY2 aluminum alloy induced by ultrahigh plastic strain during multiple laser shock processing impacts[J]. Acta Materialia, 2010, 58 (11): 3984-3994.

【30】Xie Yedong, Nong Qi. Effects of post-weld heat treatment on microstructures and mechanical properties of aluminum alloy 6061 welded joints[J]. Hot Working Technology, 2011, 40(15): 127-129.
谢业东, 农琪. 焊后热处理对6061铝合金焊接接头微观组织与力学性能的影响[J]. 热加工工艺, 2011, 40(15): 127-129.

引用该论文

Wang Jiangtao,Zhang Yongkang,Chen Jufang,Zhou Jinyu,Lu Yalin,Zhang Chaoyang. Effect of Laser Shock Processing on Electrochemical Corrosion Behavior of 7075 Aluminum Alloy Plasma Arc Weldments[J]. Chinese Journal of Lasers, 2015, 42(12): 1203006

王江涛,张永康,陈菊芳,周金宇,卢雅琳,张朝阳. 强激光冲击对7075 铝合金等离子弧焊接头电化学腐蚀行为的影响[J]. 中国激光, 2015, 42(12): 1203006

被引情况

【1】刘波,罗开玉,吴刘军,鲁金忠. 激光冲击强化对AM50镁合金性能和结构的影响. 光学学报, 2016, 36(8): 814003--1

【2】王浩,黄亿辉,张文武,茹浩磊,王声波. 激光冲击强化ZK60镁合金拉伸和耐磨性能实验研究. 激光与光电子学进展, 2016, 53(10): 101406--1

【3】江崇远,王长雨,罗开玉,鲁金忠. 激光冲击层数和氯离子浓度对AM50镁合金耐腐蚀性能的影响. 中国激光, 2018, 45(9): 902004--1

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