email   Email Us: info@lupinepublishers.com phone   Call Us: +1 (914) 407-6109   57 West 57th Street, 3rd floor, New York - NY 10019, USA

Lupine Publishers Group

Lupine Publishers

lupinepublishers
lupinepublishers

ISSN: 2641-6921

Modern Approaches on Material Science

Research Article(ISSN: 2641-6921)

Effect of Laser Welding Parameters on Porosity of Welds in Cast Magnesium Alloy AM50

Volume 1 - Issue 2

Karl Fahlström1*, Jon Blackburn2, Leif Karlsson3 and Lars-Erik Svensson3

  • Author Information Open or Close
    • 1Swerea KIMAB, Kista, University West, Sweden
    • 2The Welding Institute, Great Britain
    • 3University West, Sweden

    *Corresponding author: Karl Fahlström, Swerea KIMAB, Isafjordsgatan 28A, 164 40 Kista, Sweden


Received: December 03, 2018;   Published: December 14, 2018

DOI: 10.32474/MAMS.2018.01.000106

Full Text PDF

To view the Full Article   Peer-reviewed Article PDF

Abstract

Pores in the weld metal lower the mechanical properties of the weld. It is therefore important to understand the pore formation mechanisms and find procedures that could reduce porosity. This study focused on laser welding of 3 mm thick magnesium alloy AM50, investigating how different parameters affect porosity formation. Low levels of porosity content were achieved by either increasing the welding speed or using a two-pass welding approach. It was found that higher welding speeds did not allow pores, which were pre-existing from the die-casting process, to have sufficient time to coalesce and expand. In the two-pass welding technique, pores were removed as a result of a degassing process which occurred through the second pass.

Keywords: Laser welding; Magnesium, Cast; Metallurgy; Porosity; Automotive; AM50

Abstract| Introduction| Experimental| Results| Effect of Welding Parameters on Porosity| Discussion| Conclusion| Acknowledgement| References|

Close

Online Submission System

Drag and drop files here

or

Browse Files
( For multiple files submission, zip them in a single file to submit. For file zipping software Download )