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

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.

关键词： weld shape marangoni convection mixed shielding gas duplex stainless steel austenite/ferrite phase

作者: Santirat Nansaarng Suthiphong Sopha

作者单位: Department of Production Technology Education,Faculty of Industrial Education and Technology,King Mongkuts University of Technology Thonburi,Thongkru,Bangkok Thailand 10140

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 325-328

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）