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湿度对铝合金接头裂纹敏感性的影响规律及机理

阮野,苏金龙,乔建毅,邱小明,邢飞

阮野,苏金龙,乔建毅,邱小明,邢飞. 湿度对铝合金接头裂纹敏感性的影响规律及机理[J]. 焊接学报, 2019, 40(1): 89-93. DOI: 10.12073/j.hjxb.2019400018
引用本文: 阮野,苏金龙,乔建毅,邱小明,邢飞. 湿度对铝合金接头裂纹敏感性的影响规律及机理[J]. 焊接学报, 2019, 40(1): 89-93. DOI: 10.12073/j.hjxb.2019400018
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RUAN Ye, SU Jinlong, QIAO Jianyi, QIU Xiaoming, XING Fei. Effect of humidity on crack sensitivity of aluminum alloy weld joint and its mechanism[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(1): 89-93. DOI: 10.12073/j.hjxb.2019400018
Citation: RUAN Ye, SU Jinlong, QIAO Jianyi, QIU Xiaoming, XING Fei. Effect of humidity on crack sensitivity of aluminum alloy weld joint and its mechanism[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(1): 89-93. DOI: 10.12073/j.hjxb.2019400018
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湿度对铝合金接头裂纹敏感性的影响规律及机理

Effect of humidity on crack sensitivity of aluminum alloy weld joint and its mechanism

摘要

    摘要
  • 摘要: 采用能谱、扫描电镜和X射线衍射等测试方法，研究了湿度对铝合金接头裂纹敏感性的影响规律及机理. 结果表明，在40% ~ 80%相对湿度的条件下，改良的铝合金鱼骨试件接头表面可见结晶裂纹和液化裂纹；随着湿度的增大，接头裂纹敏感性逐渐提高，其中结晶裂纹的敏感性逐渐降低，液化裂纹的敏感性逐渐提高；湿度增大，铝合金焊缝晶粒逐渐细化，裂纹扩展阻力升高，焊缝组织细化导致结晶裂纹敏感性降低；同时提高湿度，电弧温度降低，焊接热输入量减少，液态金属越发不易在晶界处形成连续的网状薄膜结构，也导致结晶裂纹敏感性降低.
    Abstract: Effect of humidity on crack sensitivity of aluminum alloy weld joint and its mechanism were studied by EDS, SEM and XRD. Results showed that under the 40 % ~ 80% relative humidity conditions, solidfication cracks and liquation cracks on the surface of modified herringbone specimens were observed. With the increase of humidity, the crack sensitivity of the joint increased gradually, in which the sensitivity of the solidfication crack decreased, and the sensitivity of liquation crack increased gradually; As humidity increasing, the grain size of the aluminum alloy weld seam was gradually refined, the crack propagation resistance increased, which led to the reduction of the sensitivity of the solidfication crack. At the same time, as humidity increasing, the arc temperature decreased, and the welding input decreased. It was difficult for liquid metal to form continuous network film structures at grain boundaries, which also reduced the sensitivity of solidfication crack.
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  • [1] Ghiaasiaan R, Amirkhiz S B, Shankar S. Quantitative metallography of precipitating and secondary phases after strengthening treatment of net shaped casting of Al-Zn-Mg-Cu (7000) alloys[J]. Materials Science & Engineering A, 2017, 698: 206 ? 217.
    [2] Chen A, Zhang L, Wu G H, et al. Influences of Mn content on the microstructures and mechanical properties of cast Al-3Li-2Cu-0.2Zr alloy[J]. Journal of Alloys and Compounds, 2017, 715: 421 ? 431.
    [3] Engler O, Marioara C D, Hentschel T, et al. Influence of copper additions on materials properties and corrosion behaviour of Al-Mg alloy sheet[J]. Journal of Alloys and Compounds, 2017, 710: 650 ? 662.
    [4] Li Y X, Qiu S F, Zhu Z T, et al. Intergranular crack during fatigue in Al-Mg-Si aluminum alloy thin extrusions[J]. International Journal of Fatigue, 2017, 100: 105 ? 112.
    [5] Wen K, Fan Y Q, Wang G J, et al. Aging behavior and fatigue crack propagation of high Zn-containing Al-Zn-Mg-Cu alloys with zinc variation[J]. Progress in Natural Science: Materials International, 2017, 27: 217 ? 227.
    [6] Song L S, Rui B, Ting Z, et al. A link-up resulted fatigue crack branching in Al-Cu-Mg alloy[J]. International Journal of Fatigue, 2016, 92: 459 ? 469.
    [7] 张 健, 雷 振, 王旭友. 高速列车6005A铝合金型材焊接热裂纹分析[J]. 焊接学报, 2012, 33(8): 60 ? 64
    Zhang Jian, Lei Zhen, Wang Xuyou. Weld hot crack analysis of 6005A aluminum alloy[J]. Tansactions of the China Welding Instiution, 2012, 33(8): 60 ? 64
    [8] Alatorre N, Ambriz R R, Amrouche A, et al. Fatigue crack growth in Al-Zn-Mg (7075-T651) welds obtained by modified indirect and gas metal arc welding techniques[J]. Journal of Materials Processing Technology, 2017, 248: 207 ? 217.
    [9] Wang J, huang H P, Wang X J, et al. Statistical analysis of process parameters to eliminate hot cracking of fiber laser welded aluminum alloy[J]. Optics & Laser Technology, 2015, 66: 15 ? 21.
    [10] 周万盛, 姚君山. 铝及铝合金的焊接[M]. 北京:机械工业出版社, 2006.
    [11] 王炎金. 铝合金车体焊接工艺[M]. 北京:机械工业出版社, 2009.
    [12] 杨福宝, 刘恩客, 徐 骏, 等. Sc, Zr和Er微合金化Al-5Mg填充合金的焊接热裂纹敏感性[J]. 中国有色金属学报, 2010, 19(4): 620 ? 624
    Yang Fubao, Liu Enke, Xu Jun, et al. Hot-cracking susceptibility of (Sc, Zr, Er)-microalloyed Al-5Mg filler metals[J]. The Chinese Journal of Nonferrous Metals, 2010, 19(4): 620 ? 624
    [13] Liu J W, Kou X D. Susceptibility of ternary aluminum alloys to cracking during solidification[J]. Acta Materialia, 2017, 125: 513 ? 523.
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  • 收稿日期:  2017-07-05

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