The effect of laser welding power on the properties of the joint made of 1.4462 duplex stainless steel

被引：13
|
作者：
Soltysiak, Robert [1 ]
Gietka, Tomasz [1 ]
Soltysiak, Agnieszka [1 ]
机构：
[1] UTP Univ Sci & Technol Bydgoszcz, Fac Mech Engn, Al Prof S Kaliskiego 7, PL-85796 Bydgoszcz, Poland
来源：
ADVANCES IN MECHANICAL ENGINEERING | 2018年 / 10卷 / 01期
关键词：
2205; 1.4462; duplex; laser welding parameters; microstructure; tensile strength; CORROSION-RESISTANCE; SIGMA-PHASE; HEAT INPUT; MICROSTRUCTURE; METAL; STAINLESS-STEEL-2205; PRECIPITATION;
D O I：
10.1177/1687814017751949
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The butt welding of 1.4462 (2205) duplex stainless steel plates with thickness of 4mm under various welding parameters was achieved by Nd:YAG laser type without the use of the filler material. Welding parameters such as welding power (kW) and the focus distance from the joint surface (mm) were changed. The Ar 5.0 protective gas flow and welding speed were the same for all the tests and were 20L/min and 0.5m/min, respectively. The weld shape, weld macrostructure, microstructure, strength and hardness, and the content of the ferrite in the weld zone, heat-affected zone, and base metal were emphatically investigated. The test results showed that increase in laser power increases the weld zone area. For the weld samples, a better ferrite/austenite ratio was obtained by focusing the laser beam on the sheet surface. Furthermore, the largest elongation from strength test has been observed for the weld samples made with laser power of 2.0kW.
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收藏
页数：12
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