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Improvement of Weld Quality Using a Weaving Beam in Laser Welding

Xudong ZHANG , Wuzhu CHEN , Gang BAO , Lin ZHAO

This paper describes a way to improve the weld quality through suppressing the porosity formation and restraining the growth of columnar grains by using a weaving beam in laser welding. The experimental results show that the N2 porosity of beam-weaving laser welding low carbon steel can be remarkabl...

关键词: Welding , null , null , null

Microstructures and Toughness of Weld Metal of Ultrafine Grained Ferritic Steel by Laser Welding

Xudong ZHANG , Wuzhu CHEN , Cheng WANG , Lin ZHAO , Yun PENG , Zhiling TIAN

材料科学技术（英文）

3 mm thick 400 MPa grade ultrafine grained ferritic steel plates were bead-on-plate welded by CO¬2 laser with heat input of 120~480 J/mm. The microstructures of the weld metal mainly consist of bainite, which form is lower bainite plates or polygonal ferrite containing quantities of dispersed cement...

关键词: Laser welding , null , null , null

Metallurgical and Mechanical Properties of Underwater Laser Welds of Stainless Steel

Xudong ZHANG , Wuzhu CHEN , Eiji ASHIDA , Fukuhisa MATSUDA

材料科学技术（英文）

In this paper, the microstructures and mechanical properties of underwater laser welds of Type 304 stainless steel were investigated. JISY308L type filler wire was used as filler wire during welding. A gas-shielding nozzle was used to form a local dry cavity surrounding the welding zone. The main re...

关键词: Underwater laser beam welding , null , null , null

材料期刊网

Improvement of Weld Quality Using a Weaving Beam in Laser Welding

Microstructures and Toughness of Weld Metal of Ultrafine Grained Ferritic Steel by Laser Welding

Metallurgical and Mechanical Properties of Underwater Laser Welds of Stainless Steel

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