Effect of different argon arc welding wires on microstructure and properties of 2205 duplex stainless steel girth weld

WANG Fushan; LI Lei; FENG Quan; TONG Gen; XIAN Jun; LI Xuanpeng; BAI Zhenquan

doi:10.11973/lhjy-wl202207006

PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING > 2022 > 58(7): 23-27,31. > DOI: 10.11973/lhjy-wl202207006

WANG Fushan, LI Lei, FENG Quan, TONG Gen, XIAN Jun, LI Xuanpeng, BAI Zhenquan. Effect of different argon arc welding wires on microstructure and properties of 2205 duplex stainless steel girth weld[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2022, 58(7): 23-27,31. DOI: 10.11973/lhjy-wl202207006

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Effect of different argon arc welding wires on microstructure and properties of 2205 duplex stainless steel girth weld

1. Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China;
2. State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi'an 710077, China;
3. Department of Equipment Supplies, PetroChina Tarim Oilfield Company, Korla 841000, China;
4. Department of Ground Engineering, PetroChina Tarim Oilfield Company, Korla 841000, China

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Received Date: July 27, 2021

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The 2205 duplex stainless steel pipe was welded by inert gas tungsten arc welding. The differences of chemical composition, microstructure, mechanical properties and corrosion resistance between the whole welding joint by ER2209 wire and the root welding joint by ER2594 wire were studied. The results show that compared with the whole welded joint by ER2209 welding wire, the chromium content in welded joint and heat affected zone of the root welding ER2594 welding wire was increased by 6%~10%, the austenite phase content was increased, the distribution of two-phase structure was more uniform, the mechanical properties and stress corrosion resistance were good, and the corrosion rate was reduced by about 95%, and the corrosion resistance of the root welding was better than the base metal. Therefore, using ER2594 wire for root welding could effectively solve the problem that the corrosion resistance of 2205 duplex stainless steel weld was worse than that of the base metal.
- 2205 duplex stainless steel,
- girth weld,
- microstructure,
- mechanical property,
- corrosion resistance

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Effect of different argon arc welding wires on microstructure and properties of 2205 duplex stainless steel girth weld

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