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Comprehensive evaluation of welding quality for butt-welded by means of CO2 arc vibratory welding

  • Xichang Liang
  • Yi WanEmail author
  • Chengrui Zhang
  • Bing Zhang
  • Xiangqi Meng
ORIGINAL ARTICLE
  • 154 Downloads

Abstract

In order to improve the mechanical properties of welding, the welding quality of butt-welded by the application of CO2 arc vibratory welding was evaluated by tensile strength, fatigue life, microhardness, deformation, and residual stress. In addition, butt-welded microstructures of 16Mn were observed to illustrate the mechanical property changes by CO2 arc vibratory welding. The results showed that the mechanical properties were improved, and the distortion and residual stress were reduced. The mechanism was studied from microstructure observation, and the main improvement reasons were refinement of grain and microstructure change in welding zones and overheated zones. Furthermore, the mechanism of grain refinement in CVW is analyzed from the increase in nucleation rate and decrease in growth rate.

Keywords

CO2 arc vibratory welding Butt-welded Welding quality Microstructure 

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Copyright information

© Springer-Verlag London 2016

Authors and Affiliations

  • Xichang Liang
    • 1
    • 2
  • Yi Wan
    • 1
    • 2
    Email author
  • Chengrui Zhang
    • 1
    • 2
  • Bing Zhang
    • 3
  • Xiangqi Meng
    • 1
    • 2
  1. 1.School of Mechanical EngineeringShandong UniversityJinanPeople’s Republic of China
  2. 2.Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of EducationShandong UniversityJinanPeople’s Republic of China
  3. 3.Shandong Special Equipment Inspection InstituteJinanChina

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