Mechanical properties of advanced active-TIG welded duplex stainless steel and ferrite steel

被引：24

作者：

Zou, Ying ^{[1
]}

Ueji, Rintaro ^{[1
]}

Fujii, Hidetoshi ^{[1
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Ibaraki, Osaka 5670047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 620卷

关键词：

TIG welding; Duplex stainless steel; Ferrite steel; Weld penetration; Microstructure; Mechanical properties; MARANGONI CONVECTION; WELDING METHOD; OXIDE FLUXES; GAS; SHAPE; PENETRATION; BEHAVIOR; OXYGEN;

D O I：

10.1016/j.msea.2014.10.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Duplex stainless steel and ferrite steel were welded by the advanced active-TIG (AA-TIG) welding method at different oxygen contents in the shielding gas. A double-shielded gas flow system was used and the oxygen content in the outer shielding gas was altered to several levels. With the increase of the oxygen content in the shielding gas, the weld penetrations in both steels increased; whereas the change in the impact toughness of the weld metal was strongly dependent on the type of steel. The impact toughness of the duplex stainless steel remained almost constant, while that of the ferrite steel was significantly decreased with the increase in the oxygen content. This difference can be linked with the change in the fracture pass along with the difference in the microstructure. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：140 / 148

页数：9

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