Active flux tungsten inert gas welding of austenitic stainless steel AISI 304

• Published in: Metalurgija
• Main Authors: D. Klobčar, J. Tušek, M. Bizjak, S. Simončič, V. Lešer
• Format: Article
• Language: English
• Published: Croatian Society for Materials Protection 2016-10-01
• Subjects: A-TIG welding; austenitic stainless steel; QuickTIG active flux; microstructure; bending test
• Online Access: http://hrcak.srce.hr/file/231945

The paper presents the effects of flux assisted tungsten inert gas (A-TIG) welding of 4 (10) mm thick austenitic stainless steel EN X5CrNi1810 (AISI 304) in the butt joint. The sample dimensions were 300 ´ 50 mm, and commercially available active flux QuickTIG was used for testing. In the planned study the influence of welding position and weld groove shape was analysed based on the penetration depth. A comparison of microstructure formation, grain size and ferrit number between TIG welding and A-TIG welding was done. The A-TIG welds were subjected to bending test. A comparative study of TIG and A-TIG welding shows that A-TIG welding increases the weld penetration depth.