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材料工程  2013 

7A52铝合金焊接件应力腐蚀性能评价

DOI: 10.3969/j.issn.1001-4381.2013.10.015

Keywords: 应力腐蚀开裂,焊接,铝合金

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Abstract:

应用慢应变速率拉伸应力腐蚀实验方法和恒载荷拉伸应力腐蚀实验方法评价了7A52铝合金焊接试样的应力腐蚀(SCC)敏感性,并对断口微观形貌进行了分析。结果表明使用5A56焊丝,采用金属焊条惰性气体焊接(MIG)工艺双面焊制成7A52焊接件应力腐蚀敏感性比较低,具有较好的抗应力腐蚀开裂性能;但当使用环境温度较高、施加应力大于90%σp0.2时,也有可能发生应力腐蚀开裂。断口微观分析表明焊接部位普遍存在气孔;高温或高应力下产生SCC开裂的断口存在明显的二次裂纹,并且随着应力水平的增加,二次裂纹增大。

References

[1]  明珠, 马新沛, 王克鸿, 等.厚板铝合金双丝气体保护焊工艺[J].焊接, 2004, (10):25-28. MING Zhu, MA Xin-pei, WANG Ke-hong, et al. Study on double wire gas shielded arc welding technological of thick aluminum alloy plate[J].Welding & Joining, 2004, (10):25-28.
[2]  余进, 王克鸿, 徐越兰, 等.7A52铝合金双丝焊接头组织与性能[J].焊接学报, 2005, 26(10):87-89. YU Jin, WANG Ke-hong, XU Yue-lan, et al. Microstructures and properties of 7A52 aluminum alloy welded joint by twin wire welding[J]. Transactions of the China Welding Institution, 2005, 26(10):87-89.
[3]  ASTM G47, standard test method for determining susceptibility to stress-corrosion cracking of 2××× and 7××× aluminum alloy produets[S].
[4]  张颖, 林高用, 周英, 等.LC52铝合金抗剥落腐蚀性能研究[J].铝加工, 2003, (4):50-53. ZHANG Ying, LIN Gao-yong, ZHOU Ying, et al. Study on exfoliation corrosion resistance property of LC5 aluminum alloy[J]. Aluminum Fabrication, 2003, (4):50-53.
[5]  HYUNJUNG LEE, YOUNGJOO KIM, YOOIN JEONG, et al. Effects of testing variables on stress corrosion cracking susceptibility of Al 2024-T351[J]. Corrosion Science, 2012, 55:10-19.
[6]  O?ORO J. The stress corrosion cracking behaviour of heat-treated Al-Zn-Mg-Cu alloy in modified salt spray fog testing[J]. Materials and Corrosion, 2010, 61(2):125-129.
[7]  MILJANA POPOVIC, ENDRE ROMHANJI. Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content[J]. Journal of Materials Processing Technology, 2002, 125-126:275-280.
[8]  李松, 陈康华, 刘红卫, 等.高温预析出对Al-Zn-Mg系铝合金时效硬化和应力腐蚀的影响[J].粉末冶金材料科学与工程, 2003, 8(2):168-173. LI Song, CHEN Kang-hua, LIU Hong-wei, et al. Effect of post-solution high-temperature pre-precipitation on the microstructure and properties of Al-Zn-Mg aluminum alloy[J]. Materials Science and Engineering, Powders Metallurgy, 2003, 8(2):168-173.
[9]  黄兰萍, 陈康华, 李松, 等.高温预析出对Al-Zn-Mg 合金板材应力腐蚀断裂的影响[J].稀有金属材料与工程, 2006, 35(12):1943-1948. HUANG Lan-pin, CHEN Kang-hua, LI Song, et al. Effect of high-temperature pre-precipitation on stress corrosion cracking of Al-Zn-Mg aluminum alloy plate[J]. Rare Metal Materials and Engineering, 2006, 35(12):1943-1948.
[10]  HB 5254—83, 变形铝合金拉伸应力腐蚀实验方法[S].
[11]  GB/T 15970.7—2000, 金属和合金的腐蚀 应力腐蚀 第7部分 慢应变速率实验[S].
[12]  GB/T 15970.4—2000, 金属和合金的腐蚀 应力腐蚀 第4部分 单轴加载拉伸试样的制备和应用[S].
[13]  刘继华, 李荻, 郭宝兰, 等.LC4高强铝合金的慢应变速率拉伸实验[J].材料科学与工艺, 2001, 9(1):37-41. LIU Ji-hua, LI Di, GUO Bao-lan, et al. Slow strain rate tension test of high-strength aluminum alloy of 7075[J].Material Science and Technology, 2001, 9(1):37-41.
[14]  林高用, 张颖, 杨立斌, 等.时效制度对LC52铝合金组织与性能的影响[J].金属热处理, 2004, 29(10):32-35. LIN Gao-yong, ZHANG Ying, YANG Li-bin, et al. Effects of ageing treatment on structure and properties of LC5 aluminum alloy[J]. Heat Treatment of Metals, 2004, 29(10):32-35.
[15]  周鹏展, 钟掘, 贺地求.7A52厚板搅拌摩擦焊组织性能分析[J].材料科学与工程学报, 2006, 24(3):429-435. ZHOU Peng-zhan, ZHONG Jue, HE Di-qiu. Manufacture and properties in friction-stir welds of LC52 labs[J]. Journal of Materials Science and Engineering, 2006, 24(3):429-435.
[16]  郑强, 陈康华, 黄兰萍, 等.高温预析出和固溶温度对7A52合金应力腐蚀开裂的影响[J].金属热处理, 2005, 30(7):14-17. ZHENG Qiang, CHEN Kang-hua, HUANG Lan-pin, et al. Effect of high temperature pre-precipitation and solution temperature on SCC of 7A52 Alloy[J]. Heat Treatment of Metals, 2005, 30(7):14-17.
[17]  闫永贵, 马力, 曾红杰, 等.7A52 铝合金应力腐蚀性能[J].腐蚀科学与防护技术, 2009, 21(2):119-121. YAN Yong-gui, MA Li, ZENG Hong-jie, et al. Stress crack corrosion of 7A52 aluminum alloy[J]. Corrosion Science and Protection Technology, 2009, 21(2):119-121.
[18]  CIOMPI A, LANCIOTTI A. Susceptibility of 7050-T7451 electron beam welded specimens to stress corrosion[J]. Engineering Fracture Mechanics, 1999, 62(4-5):463-476.
[19]  HB 7235—95, 慢应变速率应力腐蚀实验方法[S].

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