Pore formation during laser welding in different spatial positions

A. Bernatskyi, V. Sydorets, O. Berdnikova, I. Krivtsun, D. Chinakhov

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The process of formation of pores, cavities and similar defects in welded joints of stainless steels and aluminum alloys, affecting their quality, directly depends on spatial weld position in laser welding. Reducing the angle of inclination from 90° to 0° during downhill and uphill welding of AISI 321 stainless steel in the pulse mode of laser generation leads to an increase in both the number of pores and their size. At the same time, defects in the form of pores are not observed in the continuous mode of laser generation. In laser welding of butt joints of AISI 321 steel, the flat and vertical weld positions are the most promising, as they provide the highest level of quality. In order to provide a stable formation of a high-quality butt joint of aluminum AMg6M alloy and to prevent the failure of laser equipment, the welding process should be carried out in a vertical uphill weld position.

Original languageEnglish
Title of host publicationSolid State Phenomena
PublisherTrans Tech Publications Ltd
Pages47-58
Number of pages12
DOIs
Publication statusPublished - 1 Jan 2020

Publication series

NameSolid State Phenomena
Volume303
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Keywords

  • Aluminium alloy
  • Defects
  • Different spatial position
  • Laser welding
  • Porosity
  • Quality
  • Stainless steel

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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  • Cite this

    Bernatskyi, A., Sydorets, V., Berdnikova, O., Krivtsun, I., & Chinakhov, D. (2020). Pore formation during laser welding in different spatial positions. In Solid State Phenomena (pp. 47-58). (Solid State Phenomena; Vol. 303). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/ssp.303.47