高压氢气对6061铝合金力学性能的影响

郑津洋 崔天成 顾超华 张鑫 付海龙

郑津洋, 崔天成, 顾超华, 张鑫, 付海龙. 高压氢气对6061铝合金力学性能的影响[J]. 高压物理学报, 2017, 31(5): 505-510. doi: 10.11858/gywlxb.2017.05.001
引用本文: 郑津洋, 崔天成, 顾超华, 张鑫, 付海龙. 高压氢气对6061铝合金力学性能的影响[J]. 高压物理学报, 2017, 31(5): 505-510. doi: 10.11858/gywlxb.2017.05.001
ZHENG Jin-Yang, CUI Tian-Cheng, GU Chao-Hua, ZHANG Xin, FU Hai-Long. Effects of High Pressure Hydrogen on Mechanical Properties of 6061 Aluminum Alloy[J]. Chinese Journal of High Pressure Physics, 2017, 31(5): 505-510. doi: 10.11858/gywlxb.2017.05.001
Citation: ZHENG Jin-Yang, CUI Tian-Cheng, GU Chao-Hua, ZHANG Xin, FU Hai-Long. Effects of High Pressure Hydrogen on Mechanical Properties of 6061 Aluminum Alloy[J]. Chinese Journal of High Pressure Physics, 2017, 31(5): 505-510. doi: 10.11858/gywlxb.2017.05.001

高压氢气对6061铝合金力学性能的影响

doi: 10.11858/gywlxb.2017.05.001
基金项目: 

国家重点基础研究发展计划 2015CB057601

详细信息
    作者简介:

    郑津洋(1964—),男,博士,教授,主要从事先进能源承压设备研究.E-mail:jyzh@zju.edu.cn

    通讯作者:

    顾超华(1963—),男,博士,研究员,主要从事氢能储输与安全研究.E-mail:guchaohua@zju.edu.cn

  • 中图分类号: TG146.2

Effects of High Pressure Hydrogen on Mechanical Properties of 6061 Aluminum Alloy

  • 摘要: 6061铝合金是铝内胆、碳纤维、全缠绕气瓶的重要原材料,其氢气相容性直接影响气瓶的安全可靠性,但目前缺少国产6061铝合金的氢气相容性数据。为研究高压氢气对国产6061铝合金力学性能的影响,选取2种热处理工艺的国产6061铝合金在高压氢气环境下进行慢应变速率拉伸试验和疲劳裂纹扩展试验。试验结果表明,国产6061铝合金具有良好的氢气相容性,氢气对慢应变速率拉伸性能和疲劳裂纹扩展性能的影响均较小。同时,热处理工艺对6061铝合金氢脆敏感性无明显影响。

     

  • 图  试样尺寸(单位:mm)

    Figure  1.  Sample size (Unit:mm)

    图  氢气与材料相容性测试系统

    Figure  2.  Hydrogen and material compatibility test system

    图  应力-应变曲线

    Figure  3.  Strain-stress curve

    图  光滑圆棒试样断口中心

    Figure  4.  Fracture surfaces at the center of smooth specimen

    图  光滑圆棒试样断口边缘

    Figure  5.  Fracture surfaces at the edge of smooth specimen

    图  疲劳裂纹扩展速率曲线

    Figure  6.  Fatigue crack growth rate curve

    表  1  6061铝合金棒材化学成分

    Table  1.   Chemical composition of 6061 aluminium alloy bar

    (%)
    Si Fe Cu Mn Mg Cr Zn Ti Pb Bi Others Al
    0.69 0.22 0.29 0.070 1.05 0.23 0.013 0.030 0.001 <0.000 3 <0.15 97.4
    下载: 导出CSV

    表  2  6061铝合金板材化学成分

    Table  2.   Chemical composition of 6061 aluminum alloy sheet

    (%)
    Si Fe Cu Mn Mg Cr Ti Al
    0.65 0.36 0.30 0.005 1.11 0.15 0.040 97.4
    下载: 导出CSV

    表  3  6061铝合金热处理工艺

    Table  3.   Heat treatment of 6061 aluminum alloy

    Team Solution
    temperature/(℃)
    Solution
    time/(h)
    Aging
    temperature/(℃)
    Aging
    time/(h)
    A 546 2 180 8
    B 546 2 240 1
    下载: 导出CSV

    表  4  6061铝合金力学性能

    Table  4.   Mechanical properties of 6061 aluminum alloy

    Team Tensile strength/
    (MPa)
    Yield stress/
    (MPa)
    Elongation after
    fracture/(%)
    Reduction of
    area/(%)
    A-H2 350.5 302.1 16.44 41.41
    A-Ar 355.3 309.5 17.09 41.91
    B-H2 352.1 316.7 13.89 38.89
    B-Ar 352.9 320.7 15.41 40.00
    下载: 导出CSV

    表  5  Paris模型拟合结果

    Table  5.   Fitted results of Paris model

    Team C/(10-10) m R2
    A-H2 4.76 2.36 0.994
    A-Ar 5.75 2.39 0.997
    B-H2 0.42 3.03 0.991
    B-Ar 4.09 2.45 0.984
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-11-28
  • 修回日期:  2017-02-15

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