高级检索

5A90铝锂合金电子束焊焊板超塑性变形力学行为

陈龙, 程东海, 陈益平, 胡德安

陈龙, 程东海, 陈益平, 胡德安. 5A90铝锂合金电子束焊焊板超塑性变形力学行为[J]. 焊接学报, 2016, 37(9): 75-78.
引用本文: 陈龙, 程东海, 陈益平, 胡德安. 5A90铝锂合金电子束焊焊板超塑性变形力学行为[J]. 焊接学报, 2016, 37(9): 75-78.
shu
CHEN Long, CHENG Donghai, CHEN Yiping, HU Dean. Superplastic deformation behavior of electron beam welded 5A90 aluminum lithium alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(9): 75-78.
Citation: CHEN Long, CHENG Donghai, CHEN Yiping, HU Dean. Superplastic deformation behavior of electron beam welded 5A90 aluminum lithium alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(9): 75-78.
shu

5A90铝锂合金电子束焊焊板超塑性变形力学行为

  • 南昌航空大学 航空制造工程学院, 南昌 330063

基金项目: 国家自然科学基金资助项目（51465042）；航空科学基金资助项目（2013ZE56）

Superplastic deformation behavior of electron beam welded 5A90 aluminum lithium alloy

  • Aviation Manufacturing and Engineering College, Nanchang Hangkong University, Nanchang 330063, China

摘要

    摘要
  • 摘要: 通过高温拉伸试验研究了5A90铝锂合金电子束焊焊板超塑性变形行为. 结果表明，5A90铝锂合金电子束焊焊板具有良好的超塑性变形能力，焊板的峰值流变应力随温度升高及初始应变速率的减小而减小，应变速率小于1×10-2/s时，焊板峰值流变应力小于32 MPa；焊板的断后伸长率随温度的升高和初始应变速率的增大而先增大再减小，在450℃，5×10-3/s断后伸长率达到最大为171.1%. 提出变形比例系数K（接头与母材断后伸长率的比值），评价焊板中接头的超塑性变形协调能力，在各变形条件下K值均达到70%以上.
    Abstract: The superplastic deformation behavior of electron beam welded joints of 5A90 aluminum lithium alloys was researched by high temperature tensile test. The results indicated that the electron beam welded joints of 5A90 aluminum lithium alloys present good superplasticity. The peak flow stress decreased while the temperature increased or the initial strain rate decreased, and the flow stress was below 32 MPa while the initial strain rate was below 1×102/s. The elongation of joints increased first and then decreased with increase of the deformation temperature and initial strain rate, and the maximal elongation of 171.1% was obtained at the optimal parameter 450℃, 5×103/s. Deformation coefficient K was introduced to characterize the superplasticity of electron beam weld joints. The K values were beyond 70% at all deformation parameters.
    • HTML全文
    • 参考文献(7)
  • [1] 尹登峰, 郑子樵. 铝锂合金研究开发的历史与现状[J]. 材料导报, 2003, 17(2): 18-20. Yin Dengfeng, Zheng Ziqiao. History and current status of aluminum-lithium alloys research and development[J]. Materials Review, 2003, 17(2): 18-20.
    [2] 程东海, 黄继华, 陈益平, 等. 激光焊接头超塑变形组织表征[J]. 焊接学报, 2012, 33(7): 89-92. Cheng Donghai, Huang Jihua, Chen Yiping, et al. Microstructure evolution characterization of superplastic deformation of titanium alloy[J]. Transactions of the China Welding Institution, 2012, 33(7): 89-92.
    [3] Ma Z Y, Mishra R S, Mahoney M W. Superplastic deformation behaviour of friction stir processed 7075Al alloy[J]. Acta Materialia, 2002, 50(17): 4419-4430.
    [4] Han Wenbo, Zhang Kaifeng, Wang Guofeng. Superplastic forming and diffusion bonding for honeycomb structure of Ti-6Al-4V alloy[J]. Journal of Materials Processing Technology, 2007, 183(2-3): 450-454.
    [5] 王长文, 张凯锋. Al-Li 2091合金超塑成形/扩散连接工艺研究[J]. 塑性工程学报, 1998, 5(4): 1-6. Wang Changwen, Zhang Kaifeng. Study of SPF/DB technology of Al-Li alloy[J]. Journal of Plasticity Engineering,1998, 5(4): 1-6.
    [6] 翟熙伟, 陈芙蓉, 毕良艳, 等. 7A52铝合金电子束焊接参数及性能[J]. 焊接学报, 2012, 33(8): 73-76. Zhai Xiwei, Chen Furong, Bi Liangyan, et al. Welding parameters and mechanical properties of electron beam welding of 7A52 aluminum alloy[J]. Transactions of the China Welding Institution, 2012, 33(8): 73-76.
    [7] Huang J C, Shen Y D, Hao N J. Characterization of electron beam welding of superplastic 8090 Al-Li alloys[J]. Materials Science and Technology, 1994, 10(6): 647-657.
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数:  414
  • HTML全文浏览量:  1
  • PDF下载量:  222
  • 被引次数: 0
出版历程
  • 收稿日期:  2014-10-21

目录

摘要
HTML全文
    参考文献(7)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回

    网站版权 © 焊接杂志社焊接学报编辑部电话：0451-86323218地址：哈尔滨市松北区创新路2077号

    本系统由 北京仁和汇智信息技术有限公司 开发  百度统计