Microstructures and mechanical properties of AF1410 steel processed by vacuum electron beam welding with multiple beams
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Peng-Fei Fu
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Zhen-Yun Tang
Abstract
Electron beam welding (EBW) with multiple beams is an advantageous technology to weld parts, as it contributes to decreasing welding distortions and improving mechanical properties. EBW with multiple electron beams was applied to welding simultaneously with auxiliary heating, in a rhombus scanning design, and the energy ratio was 1:1 for AF1410 steel welding. The welds of EBW with multiple beams were nail shaped with a width of 2.54 mm, which were more uniform than those of conventional EBW, and the transversal and longitudinal distortions were lower. The microstructures of specimens processed by EBW with multiple beams contained martensite and a small amount of austenite, and the martensite laths were smaller and more homogeneous than those of conventional EBW. The microhardness values were also more uniform than those of conventional EBW specimens. The tensile strengths of the joints were above 1754 MPa, equivalent to those of conventional EBW, and the percentage elongations were above 9.7 %, which were higher than those of conventional EBW. The microstructure homogeneity and refinement of EBW with multiple beams contributed to improving the mechanical performance.
Acknowledgment
The authors gratefully acknowledge the financial support from the National Key Laboratory of High Energy Density Beam Processing Technology.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This research was financially supported by the National Foundation of China.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Original Papers
- Modulated dilatometry as a tool for simultaneous study of vacancy formation and migration
- Improving structure and corrosion resistance of micro-arc oxidation coatings formed on aluminum alloy with the addition of La2O3
- Effect of trace Sc and Zr on microstructure and properties of as-cast 5182 aluminum alloy
- The recrystallization-assisted reduction in mechanical anisotropy of Al–Zn–Mg–Cu–Zr–Mn alloys
- Wear behavior and microstructural transformation of single fcc phase AlCoCrFeNi high-entropy alloy at elevated temperatures
- Microstructures and mechanical properties of AF1410 steel processed by vacuum electron beam welding with multiple beams
- News
- DGM – Deutsche Gesellschaft für Materialkunde
