Effect of magnetic field applied during laser-arc hybrid welding in improving the pitting resistance of the welded zone in austenitic stainless steel

被引：38

作者：

Chen, Rong ^{[1
]}

Jiang, Ping ^{[1
]}

Shao, Xinyu ^{[1
]}

Mi, Gaoyang ^{[2
]}

Wang, Chunming ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China

来源：

CORROSION SCIENCE | 2017年 / 126卷

基金：

中国国家自然科学基金;

关键词：

304; stainless; delta-Ferrite; Magnetic field; Welding; Pitting corrosion; Texture; MECHANICAL-PROPERTIES; SOLIDIFICATION MODE; CORROSION BEHAVIOR; MICROSTRUCTURE; FERRITE; TEMPERATURE; TEXTURE; PHASE; METAL; JOINT;

D O I：

10.1016/j.corsci.2017.07.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pitting corrosion resistance of austenitic stainless steel welded zone is improved with an external magnetic field applied during laser-arc hybrid welding. Analysis of the microstructure indicates that welding with an external magnetic field homogenizes distribution of delta-ferrite in austenite matrix by weakening delta-ferrite texture intensity and promoting growth of uniform skeletal morphology. The improved pitting corrosion resistance is characterized by a higher pitting potential with smaller passivation current density, which is attributed to the uniform Cr diffusion resulting from homogeneous distribution of delta-ferrite.

引用

页码：385 / 391

页数：7

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