The Effects of He-Ar-O2 Shielded Gas Addition on GTA Welding on Welded Shape of UNS S31803 Duplex Stainless Steel

被引：0
作者：
Nansaarng, Santirat [1 ]
Sopha, Suthiphong [1 ]
机构：
[1] King Mongkuts Univ Technol Thonburi, Fac Ind Educ & Technol, Dept Prod Technol Educ, Bangkok 10140, Thailand
来源：
ADVANCES IN KEY ENGINEERING MATERIALS | 2011年 / 214卷
关键词：
weld shape; marangoni convection; mixed shielding gas; duplex stainless steel; austenite/ferrite phase; PARAMETERS;
D O I：
10.4028/www.scientific.net/AMR.214.325
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of oxygen in helium-argon base shielded GTAW on weld shape of weld penetration are systematically investigated by bead-on-pale welding on UNS S31803 duplex stainless steel. The results show that amount of oxygen addition to He-Ar mixed shielding can significantly change the weld shape from a wide narrow type to narrow deep one and the weld depth/width ratio can be doubled due to the change in Marangoni convection condition from an outward to an inward direction.
引用
收藏
页码：325 / 328
页数：4
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