Influence of Beam Figure on Porosity of Electron Beam Welded Thin-Walled Aluminum Plates

Matthias Moschinger*, Florian Mittermayr, Norbert Enzinger

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Welded aluminum components in the aerospace industry are subject to more stringent safety regulations than in other industries. Electron beam welding as a highly precise process fulfills this requirement. The welding of aluminum poses a challenge due to its high tendency to pore formation. To gain a better understanding of pore formation during the process, 1.5 mm thick aluminum AW6082 plates were welded using specially devised beam figures in different configurations. The obtained welds were examined with radiographic testing to evaluate the size, distribution, and the number of pores. Cross-sections of the welds were investigated with light microscopy and an electron probe microanalyzer to decipher the potential mechanisms that led to porosity. The examined welds showed that the porosity is influenced in various ways by the used figures, but it cannot be completely avoided. Chemical and microstructural analyzes have revealed that the main mechanism for pore formation was the evaporation of the alloying elements Mg and Zn. This study demonstrates that the number of pores can be reduced and their size can be minimized using a proper beam figure and energy distribution.

Original languageEnglish
Article number3519
Issue number10
Publication statusPublished - 1 May 2022


  • aluminum 6082
  • beam figure
  • electron beam welding
  • porosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Fields of Expertise

  • Mobility & Production


Dive into the research topics of 'Influence of Beam Figure on Porosity of Electron Beam Welded Thin-Walled Aluminum Plates'. Together they form a unique fingerprint.

Cite this