高级检索

SiO2f/SiO2复合材料与金属铌环形钎焊接头的残余应力数值模拟

郭绍庆, 吴世彪, 熊华平, 陈波

郭绍庆, 吴世彪, 熊华平, 陈波. SiO2f/SiO2复合材料与金属铌环形钎焊接头的残余应力数值模拟[J]. 焊接学报, 2017, 38(3): 67-70.
引用本文: 郭绍庆, 吴世彪, 熊华平, 陈波. SiO2f/SiO2复合材料与金属铌环形钎焊接头的残余应力数值模拟[J]. 焊接学报, 2017, 38(3): 67-70.
shu
GUO Shaoqing, WU Shibiao, XIONG Huaping, CHEN Bo. Numerical simulation of residual stresses in brazed ring joint between SiO2f/SiO2 composite and Nb metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(3): 67-70.
Citation: GUO Shaoqing, WU Shibiao, XIONG Huaping, CHEN Bo. Numerical simulation of residual stresses in brazed ring joint between SiO2f/SiO2 composite and Nb metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(3): 67-70.
shu

SiO2f/SiO2复合材料与金属铌环形钎焊接头的残余应力数值模拟

  • 北京航空材料研究院 焊接与塑性成形研究所, 北京 100095

基金项目: 国家自然科学基金资助项目（59905022，50475160，51275497）

Numerical simulation of residual stresses in brazed ring joint between SiO2f/SiO2 composite and Nb metal

  • Welding and Plastic Forming Research Division, Beijing Institute of Aeronautical Materials, Beijing 100095, China

摘要

    摘要
  • 摘要: 对陶瓷基复合材料SiO2f/SiO2与金属铌环形钎焊接头的残余应力进行了有限元数值模拟.结果表明，接头存在较大的径向拉应力σy和周向界面剪切应力τyx，其峰值分别为1 047 MPa和329 MPa.靠近焊缝的SiO2f/SiO2中存在应力集中，因而在焊后冷却过程容易首先破坏.在SiO2f/SiO2连接面表层加工沟槽可有效缓解残余应力，σy和τyx峰值分别降低到731 MPa和230 MPa.与不开槽钎焊比较，在靠近焊缝界面的SiO2f/SiO2侧表层，开槽钎焊使σy从200 MPa降至81 MPa、τyx从230 MPa降至53 MPa.陶瓷被焊表面开槽之后再钎焊填入钎料所引起的应力缓解，对于避免开裂、提高接头强度及可靠性十分有利.
    Abstract: The residual stress in brazed ring joints between SiO2f/SiO2 composite and Nb along radial direction was numerically simulated with finite element method. According to simulation results, there were large radial tensile stress σy and circumferential shear stress τyx in the brazed joint, and the peak values were 1 047 MPa and 329 MPa respectively. Moreover, there was obvious stress concentration at the side of SiO2f/SiO2 composite adjacent to the brazing seam, which was the weakest site that damage will preferentially occur during the cooling stage. The residual stress can be mitigated effectively by cutting narrow grooves at the jointed surface of SiO2f/SiO2 composite, and the peak values of σy and τyx were reduced to 731 MPa and 230 MPa respectively. In comparison with the condition with no groove cutting, the σy and τyx near surface at the side of SiO2f/SiO2 composites adjacent to its interface with brazing seam were reduced from 200 MPa to 81 MPa and from 230 MPa to 53 MPa respectively. The significant mitigation of residual stress in brazed joints caused by groove cutting is very beneficial to avoid the crack and to improve the joint strength as well as the joint reliability.
    • HTML全文
    • 参考文献(10)
  • [1] 熊华平, 毛建英, 陈冰清, 等. 航空航天轻质高温结构材料的焊接技术研究进展[J]. 材料工程, 2013(10): 1-12. Xiong Huaping, Mao Jianying, Chen Bingqing, et al. Research advances on the welding and joining technologies of light-mass high-temperature structural materials in aerospace field[J]. Journal of Materials Engineering, 2013(10): 1-12.
    [2] 张丽霞, 吴林志, 田晓羽, 等. SiO2陶瓷与TC4钛合金的钎焊研究[J]. 材料工程, 2008, (9): 13-16. Zhang Lixia, Wu Linzhi, Tian Xiaoyu, et al. Research on the brazing of SiO2 ceramic to TC4 alloy[J]. Journal of Materials Engineering, 2008(9): 13-16.
    [3] 邹文江, 陈 波, 李文文, 等. Ag-Cu-In-Ti钎料钎焊Si02f/Si02复合材料与钼合金的接头组织及机理[J]. 焊接学报, 2015, 36(12): 73-76. Zou Wenjiang, Chen Bo, Li Wenwen, et al. Microstructures and joining mechanism of vacuum brazing of Si02f/Si02composites to Mo alloy using Au-Cu-In-Ti brazing fillers[J]. Transactions of the China Welding Institution. 2015, 36(12): 73-76.
    [4] Rabin B H, Wolliamson R L, Suresh S. Fundamentals of residual stress in joints between dissimilar materials[J]. Materials Research society Bulletin, 1995(1): 37-39.
    [5] 熊华平, 李 红, 毛 唯, 等. 国际钎焊技术最新发展[J]. 焊接学报, 2011, 32(5): 108-112. Xiong Huaping, Li Hong, Mao Wei, et al. Reviews on latest advances in brazing and soldering technologies[J]. Transactions of the China Welding Institution, 2011, 32(5): 108-112.
    [6] 韩 飞, 雷永平, 夏志东, 等. 陶瓷金属钎焊接头优化与残余应力数值模拟[J]. 焊接, 2008(6): 27-30. Han Fei, Lei Yongping, Xia Zhidong, et al. Optimization of ceramic/metal brazed joints and numerical simulation on residual stress[J]. Welding & Joining, 2008(6): 27-30.
    [7] 王 颖, 何 鹏, 冯吉才, 等. 接头形式对陶瓷/金属连接残余应力的影响[J]. 焊接学报, 2007, 28(4): 13-16. Wang Ying, He Peng, Feng Jicai, et al. Effect of joint types on residual stress in ceramic/metal joint[J]. Transactions of the China Welding Institution, 2007, 28(4): 13-16.
    [8] 李瑞峰, 于治水, 祁 凯. 试样尺寸对A12O3陶瓷/Nb钎焊接头应力场分布的影响[J]. 稀有金属材料与工程, 2005, 34(3): 401-404. Li Ruifeng, Yu Zhishui, Qi Kai. Effect of specimen size on the residual stress of Al2O3 and Nb brazed joint[J]. Rare Metal Materials and Engineering, 2005, 34(3): 401-404.
    [9] Li R F, Yu Z S, Qi K, Liang C, et al. The FEM analysis of distribution of residual thermal stresses at A12O3/Nb brazed joint[J]. Rare Materials and Engineering, 2005, 13(1): 79-83.
    [10] Chen B, Xiong H P, Mao W, et al. Joining of SiO2f/SiO2 composite to metals using AgCuTi brazing filler, the joint strengths and microstructures[C]//Proceedings of the 5th International Brazing & Soldering Conference (IBSC), Las Vegas, Nevada, USA, 2012, 109-113.
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数:  416
  • HTML全文浏览量:  28
  • PDF下载量:  166
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-11-07

目录

摘要
HTML全文
    参考文献(10)
    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