Next Article in Journal
Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane
Next Article in Special Issue
The Effects of Laser Welding Direction on Joint Quality for Non-Uniform Part-to-Part Gaps
Previous Article in Journal
One-Step Extraction of Antimony in Low Temperature from Stibnite Concentrate Using Iron Oxide as Sulfur-Fixing Agent
Previous Article in Special Issue
Effects of Reflow Time on the Interfacial Microstructure and Shear Behavior of the SAC/FeNi-Cu Joint
Article Menu

Export Article

Open AccessArticle
Metals 2016, 6(7), 155;

Gas Metal Arc Welding Using Novel CaO-Added Mg Alloy Filler Wire

Joining R & D Group, Korea Institute of Industrial Technology, 156 Gaetbeol-ro (Songdo-dong), Yeonsu-Gu, Incheon 21999, Korea
Author to whom correspondence should be addressed.
Academic Editor: Giuseppe Casalino
Received: 25 February 2016 / Revised: 18 June 2016 / Accepted: 23 June 2016 / Published: 8 July 2016
View Full-Text   |   Download PDF [6477 KB, uploaded 8 July 2016]   |  


Novel “ECO Mg” alloys, i.e., CaO-added Mg alloys, which exhibit oxidation resistance during melting and casting processes, even without the use of beryllium or toxic protection gases such as SF6, have recently been introduced. Research on ECO Mg alloys is still continuing, and their application as welding filler metals was investigated in this study. Mechanical and metallurgical aspects of the weldments were analysed after welding, and welding behaviours such as fume generation and droplet transfer were observed during welding. The tensile strength of welds was slightly increased by adding CaO to the filler metal, which resulted from the decreased grain size in the weld metal. When welding Mg alloys, fumes have been unavoidable so far because of the low boiling temperature of Mg. Fume reduction was successfully demonstrated with a wire composed of the novel ECO Mg filler. In addition, stable droplet transfer was observed and spatter suppression could be expected by using CaO-added Mg filler wire. View Full-Text
Keywords: magnesium; fusion welding; CaO-added filler; fumes; microstructure magnesium; fusion welding; CaO-added filler; fumes; microstructure

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Kang, M.; Ahn, Y.; Kim, C. Gas Metal Arc Welding Using Novel CaO-Added Mg Alloy Filler Wire. Metals 2016, 6, 155.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top