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焊接参数对2024铝合金FSW接头组织及腐蚀行为的影响

, PP. 51-56

Keywords: 2024铝合金,搅拌摩擦焊,微观组织,显微硬度,浸泡试验

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Abstract:

对2024铝合金板进行不同参数下搅拌摩擦焊接,分析了焊缝表面组织,检查了在EXCO溶液中焊缝表面的腐蚀行为,并讨论硬度分布与腐蚀发生的关系.结果表明,焊后轴肩作用区晶粒细化明显.随转速的增加,焊缝上表面热影响区范围加宽、轴肩作用区硬度上升、耐蚀性能提高.在转速1500r/min、行进速度1000mm/min下所得焊缝金属塑性流动剧烈,轴肩作用区硬度值已接近母材的硬度值,在EXCO溶液中浸泡10h后仅发生点蚀.与母材相比,接头硬度的软化区是腐蚀发生的区域,但硬度值最低的位置与腐蚀最严重的区域没有严格的对应关系.

References

[1]  Matrukanitz R P. Selection and weldability of heat-treatable aluminum alloys, ASM Handbook-Welding, Brazing and Soldering[M]. ASM Int, 1990: 528.
[2]  王希靖, 孙桂苹, 张杰等.焊后热处理对高强铝合金搅拌摩擦焊接头的影响[J]. 中国有色金属学报,2009, 20(3): 484.
[3]  Mishra R S, Ma Z Y. Friction stir welding and processing[J]. Mater. Sci. Eng., 2005, R50: 1.
[4]  Xu W F, Liu J H, Luan G H, et al. Temperature evolution, microstructure and mechanical properties of friction stir welded thick 2219-O aluminum alloy joints[J]. Mater. Des., 2009, 30:1886.
[5]  Cavaliere P, Cerri E, Squillace A. J. Mechanical response of 2024-7075 aluminium alloys joined by Friction Stir Welding[J].Mater. Sci., 2005, 40: 3669.
[6]  柴鹏, 栾国红, 郭德伦等. FSW接头残余应力分布及控制技术[J].焊接学报, 2005, 26(11): 79.
[7]  赵衍华, 林三宝, 吴林. 2014铝合金搅拌摩擦焊接过程塑性金属流变可视化[J]. 焊接学报, 2005, 26(6):73.
[8]  Lu S X, Yan J C, Li W G, et al. Simulation on temperature field of friction stir welded joints of 2024-T4 Al[J]. Acta Metall.Sinica, 2005, 18: 552.
[9]  栾国红, 付瑞东, 董春林等.中性盐雾下7075铝合金搅拌摩擦焊焊缝的腐蚀行为[J]. 中国腐蚀与防护学报,2010, 30(3): 236.
[10]  Jariyaboon M, Davenport A J, Ambat R, et al. The effect of welding parameters on the corrosion behavior of friction stir welded AA2024-T351 [J]. Corros. Sci., 2007, 49: 877.
[11]  Surekha K, Murty B S, Prasad R K. Microstructural characterization and corrosion behavior of multipass friction stir processed AA2219 aluminium alloy[J]. Surf. Coat. Technol.. 2008,202: 4057.
[12]  Kang J, Fu R D, Luan G H, et al. In-situ investigation on the pitting corrosion behavior of friction stir welded joint of AA2024-T3 aluminium alloy[J]. Corros. Sci., 2010, 52: 620.
[13]  Omar H. Effects of peening on mechanical properties in friction stir welded 2195 aluminum alloy joints[J]. Mater. Sci.Eng., 2008, A492: 168.
[14]  黄光杰, 汪凌云. 热处理对2024铝合金组织和性能的影响[J].重庆大学学报(自然科学版), 2000, 23(4): 99.
[15]  ASTM G34-01. Standard test method for exfoliation corrosion susceptibility in 2××× and 7××× series aluminum alloys (EXCO Test) [S].
[16]  付瑞东, 栾国红, 董春林等.酸性盐雾中7075铝合金搅拌摩擦焊接头的腐蚀行为[J]. 腐蚀科学与防护技术,2009, 21(6): 580.
[17]  Yang B S, Yan J H, Michael S A, et al. Banded microstructure in AA2024-T351 and AA2524-T351 aluminum friction stir welds. Part I. Metallurgical studies[J]. Mater. Sci. Eng., 2004,A364: 55.
[18]  Michael S A, Yang B S, Anthony R P, et al. Banded microstructure in 2024-T351 and 2524-T351 aluminum friction stir welds. Part II. Mechanical characterization[J]. Mater. Sci. Eng.,2004, A364: 66.
[19]  Yutaka S S, Mitsunori U, Hiroyuki K. Hall-Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys[J]. Mater. Sci. Eng., 2003, A354: 298.

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