Warning: fopen(/home/virtual/kwjs/journal/upload/ip_log/ip_log_2024-03.txt): failed to open stream: Permission denied in /home/virtual/lib/view_data.php on line 88 Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/virtual/lib/view_data.php on line 89 Variation of Toughness and Porosity Formation in Weld Metal with Al Content in Self-Shielded Arc Welding Wire

Journal of KWJS 2011;29(1):74-79.
Published online March 4, 2011.
셀프실드용접 와이어의 Al 첨가량에 따른 용접금속 인성 및 기공형성 변화
, , ,
 
Variation of Toughness and Porosity Formation in Weld Metal with Al Content in Self-Shielded Arc Welding Wire
Kook-soo Bang, Chan Park, Kil Woong, Woong-Seong Chang
Abstract
  Three different welding wires were used to study the effects of Al content on weld metal toughness and porosity formation in self-shielded arc welding. Weld metal microstructure showed that while wire with 1.3% Al content contains coarse δ-ferrite, wires with less than 0.5% Al content showed no such phase. In addition to the microstructural differences, cleanliness in weld metal was also different among wires. It showed that weld metal toughness was influenced by the δ-ferrite formation, cleanliness and Ni addition. Even though wires with less than 0.5% Al content showed higher weld metal toughness, they showed relatively poor workability, forming porosities in weld bead in lower arc voltages.
Key Words: Self-shield arc welding wire, Al content, Weld metal microstructure, Toughness, porosity


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY 
FOR CONTRIBUTORS
Editorial Office
#304, San-Jeong Building, 23, Gukhoe-daero 66-gil, Yeongdeungpo-gu, Seoul 07237, Korea
Tel: +82-2-538-6511    Fax: +82-2-538-6510    E-mail: koweld@kwjs.or.kr                

Copyright © 2024 by The Korean Welding and Joining Society.

Developed in M2PI